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Nicotinamide adenine dinucleotide

Index Nicotinamide adenine dinucleotide

Nicotinamide adenine dinucleotide (NAD) is a coenzyme found in all living cells. [1]

199 relations: Absorption spectroscopy, Acetyl group, Acid–base homeostasis, Adenine, Adenosine monophosphate, Adenosine triphosphate, ADP-ribosylation, Ageing, Albert L. Lehninger, Aldose reductase, Alzheimer's disease, Amide, Amino acid, Amorphous solid, Anabolism, Anomer, Antibiotic, Archaea, Arthur Harden, Arthur Kornberg, Aspartic acid, Auxotrophy, Base (chemistry), Beta oxidation, Biological target, Blood vessel, Calcium signaling, Candida glabrata, Cell (biology), Cell nucleus, Cell signaling, Celsius, Centimetre, Charles Brenner, Chemiosmosis, Chlamydia trachomatis, Chloroplast, Cholera toxin, Citric acid cycle, Coenzyme Q10, Cofactor (biochemistry), Conrad Elvehjem, Cryptosporidium parvum, Cyclic ADP-ribose, Cytoplasm, Cytosol, De novo synthesis, Deuterium, Diastereomer, Diffusion, ..., Dihydrofolate reductase, Dissociation constant, DNA ligase, DNA repair, Drug design, Drug discovery, Electron, Electron transfer, Electron transport chain, Endoplasmic reticulum, Enoyl-acyl carrier protein reductase, Enzyme, Enzyme assay, Enzyme catalysis, Enzyme inhibitor, Enzyme kinetics, Ethanol fermentation, Eukaryote, Extracellular, Fatty acid, Fatty acid synthesis, Fluorescence, Fluorescence microscope, Formal charge, Functional group, Germany, Gluconeogenesis, Glucose, Glucose-6-phosphate dehydrogenase, Glyceraldehyde 3-phosphate dehydrogenase, Glycolysis, Glycosyltransferase, Gram, Haemophilus influenzae, Hans von Euler-Chelpin, Histone deacetylase, Host (biology), Hydride, Hygroscopy, Immunosuppressive drug, IMP dehydrogenase, Ion, Ionic bonding, Isoniazid, Large intestine, List of EC numbers (EC 1), Malate-aspartate shuttle, Mammal, Massachusetts Institute of Technology, Membrane transport protein, Merck Index, Metabolic pathway, Metabolism, MetaCyc, Methylenetetrahydrofolate reductase, Michael Rossmann, Microorganism, Mitochondrial shuttle, Mitochondrion, Model organism, Moiety (chemistry), Molar attenuation coefficient, Molar concentration, Mole (unit), Mycobacterium tuberculosis, Mycophenolic acid, NAD+ kinase, NADH dehydrogenase, Nanometre, Nanosecond, Nerve, Neurodegeneration, Neuron, Neurotransmitter, Niacin, Nicotinamidase, Nicotinamide, Nicotinamide adenine dinucleotide phosphate, Nicotinamide riboside, Nitrification, Nitrite oxidoreductase, Nitrobacter, Nucleic acid nomenclature, Nucleoside, Nucleosome, Nucleotide, Nucleotide salvage, Organelle, Otto Heinrich Warburg, Oxidative phosphorylation, Oxidizing agent, Oxidoreductase, Parkinson's disease, Pathogen, Pellagra, Peroxidase, PH, Pharmacology, Phosphate, Phosphodiester bond, Phosphorylation, Photosynthesis, Poly (ADP-ribose) polymerase, Polyphosphate, Post-translational modification, Prochirality, Prodrug, Protein, Protein Data Bank, Proton, Purine metabolism, Pyrococcus, Pyruvate dehydrogenase, Quinolinic acid, Radical (chemistry), Redox, Reducing agent, Resveratrol, Ribose, RNA, Rossmann fold, Ryanodine receptor, Second messenger system, Sigma-Aldrich, Sirtuin, Sirtuin 1, Smooth muscle tissue, Spectrophotometry, Stereoisomerism, Structural motif, Substrate (chemistry), Synaptosome, Telomere, Tiazofurin, Toxin, Transcription (biology), Tryptophan, Tuberculosis, Ultraviolet, UniProt, United Kingdom, United States, Urinary bladder, Vertebrate, Vitamin deficiency, Volt, Wavelength, William John Young, Yeast. Expand index (149 more) »

Absorption spectroscopy

Absorption spectroscopy refers to spectroscopic techniques that measure the absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample.

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Acetyl group

In organic chemistry, acetyl is a moiety, the acyl with chemical formula CH3CO.

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Acid–base homeostasis

Acid–base homeostasis is the homeostatic regulation of the pH of the body's extracellular fluid (ECF).

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Adenine

Adenine (A, Ade) is a nucleobase (a purine derivative).

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Adenosine monophosphate

Adenosine monophosphate (AMP), also known as 5'-adenylic acid, is a nucleotide.

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Adenosine triphosphate

Adenosine triphosphate (ATP) is a complex organic chemical that participates in many processes.

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ADP-ribosylation

ADP-ribosylation is the addition of one or more ADP-ribose moieties to a protein.

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Ageing

Ageing or aging (see spelling differences) is the process of becoming older.

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Albert L. Lehninger

Albert Lester Lehninger (February 17, 1917 – March 4, 1986) was an American biochemist in the field of bioenergetics.

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Aldose reductase

In enzymology, aldose reductase (or aldehyde reductase) is a cytosolic NADPH-dependent oxidoreductase that catalyzes the reduction of a variety of aldehydes and carbonyls, including monosaccharides.

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Alzheimer's disease

Alzheimer's disease (AD), also referred to simply as Alzheimer's, is a chronic neurodegenerative disease that usually starts slowly and worsens over time.

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Amide

An amide (or or), also known as an acid amide, is a compound with the functional group RnE(O)xNR′2 (R and R′ refer to H or organic groups).

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Amino acid

Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid.

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Amorphous solid

In condensed matter physics and materials science, an amorphous (from the Greek a, without, morphé, shape, form) or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal.

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Anabolism

Anabolism (from ἁνά, "upward" and βάλλειν, "to throw") is the set of metabolic pathways that construct molecules from smaller units.

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Anomer

An anomer is a type of geometric variation found in at certain atoms in carbohydrate molecules.

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Antibiotic

An antibiotic (from ancient Greek αντιβιοτικά, antibiotiká), also called an antibacterial, is a type of antimicrobial drug used in the treatment and prevention of bacterial infections.

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Archaea

Archaea (or or) constitute a domain of single-celled microorganisms.

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Arthur Harden

Sir Arthur Harden, FRS (12 October 1865 Manchester, Lancashire – 17 June 1940 Bourne End, Buckinghamshire) was a British biochemist.

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Arthur Kornberg

Arthur Kornberg (March 3, 1918 – October 26, 2007) was an American biochemist who won the Nobel Prize in Physiology or Medicine 1959 for his discovery of "the mechanisms in the biological synthesis of deoxyribonucleic acid (DNA)" together with Dr.

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Aspartic acid

Aspartic acid (symbol Asp or D; salts known as aspartates), is an α-amino acid that is used in the biosynthesis of proteins.

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Auxotrophy

Auxotrophy (αὐξάνω "to increase"; τροφή "nourishment") is the inability of an organism to synthesize a particular organic compound required for its growth (as defined by IUPAC).

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Base (chemistry)

In chemistry, bases are substances that, in aqueous solution, release hydroxide (OH−) ions, are slippery to the touch, can taste bitter if an alkali, change the color of indicators (e.g., turn red litmus paper blue), react with acids to form salts, promote certain chemical reactions (base catalysis), accept protons from any proton donor, and/or contain completely or partially displaceable OH− ions.

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Beta oxidation

In biochemistry and metabolism, beta-oxidation is the catabolic process by which fatty acid molecules are broken down in the cytosol in prokaryotes and in the mitochondria in eukaryotes to generate acetyl-CoA, which enters the citric acid cycle, and NADH and FADH2, which are co-enzymes used in the electron transport chain.

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Biological target

A biological target is anything within a living organism to which some other entity (like an endogenous ligand or a drug) is directed and/or binds, resulting in a change in its behavior or function.

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Blood vessel

The blood vessels are the part of the circulatory system, and microcirculation, that transports blood throughout the human body.

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Calcium signaling

Calcium (Ca2+) ions are important for cellular signalling, as once they enter the cytosol of the cytoplasm they exert allosteric regulatory effects on many enzymes and proteins.

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Candida glabrata

Candida glabrata is a haploid yeast of the genus Candida, previously known as Torulopsis glabrata.

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Cell (biology)

The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known living organisms.

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Cell nucleus

In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel or seed) is a membrane-enclosed organelle found in eukaryotic cells.

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Cell signaling

Cell signaling (cell signalling in British English) is part of any communication process that governs basic activities of cells and coordinates all cell actions.

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Celsius

The Celsius scale, previously known as the centigrade scale, is a temperature scale used by the International System of Units (SI).

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Centimetre

A centimetre (international spelling as used by the International Bureau of Weights and Measures; symbol cm) or centimeter (American spelling) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of.

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Charles Brenner

Charles Brenner born October 30, 1961 is the Roy J. Carver Chair of Biochemistry and a director of the Obesity Initiative at the University of Iowa.

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Chemiosmosis

Chemiosmosis is the movement of ions across a semipermeable membrane, down their electrochemical gradient.

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Chlamydia trachomatis

Chlamydia trachomatis, commonly known as chlamydia, is one of four bacterial species in the genus Chlamydia.

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Chloroplast

Chloroplasts are organelles, specialized compartments, in plant and algal cells.

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Cholera toxin

Cholera toxin (also known as choleragen and sometimes abbreviated to CTX, Ctx or CT) is protein complex secreted by the bacterium Vibrio cholerae.

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Citric acid cycle

The citric acid cycle (CAC) – also known as the tricarboxylic acid (TCA) cycle or the Krebs cycle – is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins into carbon dioxide and chemical energy in the form of adenosine triphosphate (ATP).

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Coenzyme Q10

Coenzyme Q10, also known as ubiquinone, ubidecarenone, coenzyme Q, and abbreviated at times to CoQ10, CoQ, or Q10 is a coenzyme that is ubiquitous in animals and most bacteria (hence the name ubiquinone).

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Cofactor (biochemistry)

A cofactor is a non-protein chemical compound or metallic ion that is required for an enzyme's activity.

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Conrad Elvehjem

Conrad Arnold Elvehjem (May 27, 1901July 27, 1962) was internationally known as an American biochemist in nutrition.

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Cryptosporidium parvum

Cryptosporidium parvum is one of several species that cause cryptosporidiosis, a parasitic disease of the mammalian intestinal tract.

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Cyclic ADP-ribose

Cyclic ADP Ribose, frequently abbreviated as cADPR, is a cyclic adenine nucleotide (like cAMP) with two phosphate groups present on 5' OH of the adenosine (like ADP), further connected to another ribose at the 5' position, which, in turn, closes the cycle by glycosidic bonding to the nitrogen 1 (N1) of the same adenine base (whose position N9 has the glycosidic bond to the other ribose).

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Cytoplasm

In cell biology, the cytoplasm is the material within a living cell, excluding the cell nucleus.

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Cytosol

The cytosol, also known as intracellular fluid (ICF) or cytoplasmic matrix, is the liquid found inside cells.

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De novo synthesis

De novo synthesis refers to the synthesis of complex molecules from simple molecules such as sugars or amino acids, as opposed to recycling after partial degradation.

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Deuterium

Deuterium (or hydrogen-2, symbol or, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other being protium, or hydrogen-1).

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Diastereomer

Diastereomers (sometimes called diastereoisomers) are a type of a stereoisomer.

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Diffusion

Diffusion is the net movement of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration (or low chemical potential) as a result of random motion of the molecules or atoms.

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Dihydrofolate reductase

Dihydrofolate reductase, or DHFR, is an enzyme that reduces dihydrofolic acid to tetrahydrofolic acid, using NADPH as electron donor, which can be converted to the kinds of tetrahydrofolate cofactors used in 1-carbon transfer chemistry.

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Dissociation constant

In chemistry, biochemistry, and pharmacology, a dissociation constant (K_d) is a specific type of equilibrium constant that measures the propensity of a larger object to separate (dissociate) reversibly into smaller components, as when a complex falls apart into its component molecules, or when a salt splits up into its component ions.

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DNA ligase

DNA ligase is a specific type of enzyme, a ligase, that facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond.

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DNA repair

DNA repair is a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome.

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Drug design

Drug design, often referred to as rational drug design or simply rational design, is the inventive process of finding new medications based on the knowledge of a biological target.

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Drug discovery

In the fields of medicine, biotechnology and pharmacology, drug discovery is the process by which new candidate medications are discovered.

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Electron

The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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Electron transfer

Electron transfer (ET) occurs when an electron relocates from an atom or molecule to another such chemical entity.

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Electron transport chain

An electron transport chain (ETC) is a series of complexes that transfer electrons from electron donors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane.

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Endoplasmic reticulum

The endoplasmic reticulum (ER) is a type of organelle found in eukaryotic cells that forms an interconnected network of flattened, membrane-enclosed sacs or tube-like structures known as cisternae.

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Enoyl-acyl carrier protein reductase

Enoyl-acyl carrier protein reductase (or ENR), is a key enzyme of the type II fatty acid synthesis (FAS) system.

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Enzyme

Enzymes are macromolecular biological catalysts.

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Enzyme assay

Enzyme assays are laboratory methods for measuring enzymatic activity.

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Enzyme catalysis

Enzyme catalysis is the increase in the rate of a chemical reaction by the active site of a protein.

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Enzyme inhibitor

4QI9) An enzyme inhibitor is a molecule that binds to an enzyme and decreases its activity.

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Enzyme kinetics

Enzyme kinetics is the study of the chemical reactions that are catalysed by enzymes.

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Ethanol fermentation

Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.

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Eukaryote

Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, unlike Prokaryotes (Bacteria and other Archaea).

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Extracellular

In cell biology, molecular biology and related fields, the word extracellular (or sometimes extracellular space) means "outside the cell".

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Fatty acid

In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with a long aliphatic chain, which is either saturated or unsaturated.

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Fatty acid synthesis

Fatty acid synthesis is the creation of fatty acids from acetyl-CoA and NADPH through the action of enzymes called fatty acid synthases.

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Fluorescence

Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation.

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Fluorescence microscope

A fluorescence microscope is an optical microscope that uses fluorescence and phosphorescence instead of, or in addition to, reflection and absorption to study properties of organic or inorganic substances.

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Formal charge

In chemistry, a formal charge (FC) is the charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms, regardless of relative electronegativity.

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Functional group

In organic chemistry, functional groups are specific substituents or moieties within molecules that are responsible for the characteristic chemical reactions of those molecules.

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Germany

Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.

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Gluconeogenesis

Gluconeogenesis (GNG) is a metabolic pathway that results in the generation of glucose from certain non-carbohydrate carbon substrates.

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Glucose

Glucose is a simple sugar with the molecular formula C6H12O6.

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Glucose-6-phosphate dehydrogenase

Glucose-6-phosphate dehydrogenase (G6PD or G6PDH) is a cytosolic enzyme that catalyzes the chemical reaction This enzyme participates in the pentose phosphate pathway (see image), a metabolic pathway that supplies reducing energy to cells (such as erythrocytes) by maintaining the level of the co-enzyme nicotinamide adenine dinucleotide phosphate (NADPH).

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Glyceraldehyde 3-phosphate dehydrogenase

Glyceraldehyde 3-phosphate dehydrogenase (abbreviated as GAPDH or less commonly as G3PDH) is an enzyme of ~37kDa that catalyzes the sixth step of glycolysis and thus serves to break down glucose for energy and carbon molecules.

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Glycolysis

Glycolysis (from glycose, an older term for glucose + -lysis degradation) is the metabolic pathway that converts glucose C6H12O6, into pyruvate, CH3COCOO− + H+.

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Glycosyltransferase

Glycosyltransferases (GTFs, Gtfs) are enzymes (EC 2.4) that establish natural glycosidic linkages.

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Gram

The gram (alternative spelling: gramme; SI unit symbol: g) (Latin gramma, from Greek γράμμα, grámma) is a metric system unit of mass.

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Haemophilus influenzae

Haemophilus influenzae (formerly called Pfeiffer's bacillus or Bacillus influenzae) is a Gram-negative, coccobacillary, facultatively anaerobic pathogenic bacterium belonging to the Pasteurellaceae family.

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Hans von Euler-Chelpin

Hans Karl August Simon von Euler-Chelpin (15 February 1873 – 6 November 1964) was a German-born Swedish biochemist.

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Histone deacetylase

Histone deacetylases (HDAC) are a class of enzymes that remove acetyl groups (O.

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Host (biology)

In biology and medicine, a host is an organism that harbours a parasitic, a mutualistic, or a commensalist guest (symbiont), the guest typically being provided with nourishment and shelter.

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Hydride

In chemistry, a hydride is the anion of hydrogen, H−, or, more commonly, it is a compound in which one or more hydrogen centres have nucleophilic, reducing, or basic properties.

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Hygroscopy

Hygroscopy is the phenomenon of attracting and holding water molecules from the surrounding environment, which is usually at normal or room temperature.

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Immunosuppressive drug

Immunosuppressive drugs or immunosuppressive agents or antirejection medications are drugs that inhibit or prevent activity of the immune system.

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IMP dehydrogenase

IMP dehydrogenase (Inosine-5'-monophosphate dehydrogenase) (Inosinic acid dehydrogenaseis) (IMPDH) an enzyme that converts inosine monophosphate to xanthosine monophosphate: It catalyzes the rate-limiting reaction of de novo GTP biosynthesis.

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Ion

An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).

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Ionic bonding

Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds.

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Isoniazid

Isoniazid, also known as isonicotinylhydrazide (INH), is an antibiotic used for the treatment of tuberculosis.

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Large intestine

The large intestine, also known as the large bowel or colon, is the last part of the gastrointestinal tract and of the digestive system in vertebrates.

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List of EC numbers (EC 1)

This list contains a list of EC numbers for the first group, EC 1, oxidoreductases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.

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Malate-aspartate shuttle

The malate-aspartate shuttle (sometimes also the malate shuttle) is a biochemical system for translocating electrons produced during glycolysis across the semipermeable inner membrane of the mitochondrion for oxidative phosphorylation in eukaryotes.

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Mammal

Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.

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Massachusetts Institute of Technology

The Massachusetts Institute of Technology (MIT) is a private research university located in Cambridge, Massachusetts, United States.

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Membrane transport protein

A membrane transport protein (or simply transporter) is a membrane protein involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane.

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Merck Index

The Merck Index is an encyclopedia of chemicals, drugs and biologicals with over 10,000 monographs on single substances or groups of related compounds.

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Metabolic pathway

In biochemistry, a metabolic pathway is a linked series of chemical reactions occurring within a cell.

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Metabolism

Metabolism (from μεταβολή metabolē, "change") is the set of life-sustaining chemical transformations within the cells of organisms.

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MetaCyc

The MetaCyc database contains extensive information on metabolic pathways and enzymes from many organisms.

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Methylenetetrahydrofolate reductase

Methylene tetrahydrofolate reductase (MTHFR) is the rate-limiting enzyme in the methyl cycle, and it is encoded by the MTHFR gene.

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Michael Rossmann

Michael G. Rossmann (born 1930) is a German-American physicist, microbiologist, and Hanley Distinguished Professor of Biological Sciences at Purdue University who led a team of researchers to be the first to map the structure of a human common cold virus to an atomic level.

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Microorganism

A microorganism, or microbe, is a microscopic organism, which may exist in its single-celled form or in a colony of cells. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from 6th century BC India and the 1st century BC book On Agriculture by Marcus Terentius Varro. Microbiology, the scientific study of microorganisms, began with their observation under the microscope in the 1670s by Antonie van Leeuwenhoek. In the 1850s, Louis Pasteur found that microorganisms caused food spoilage, debunking the theory of spontaneous generation. In the 1880s Robert Koch discovered that microorganisms caused the diseases tuberculosis, cholera and anthrax. Microorganisms include all unicellular organisms and so are extremely diverse. Of the three domains of life identified by Carl Woese, all of the Archaea and Bacteria are microorganisms. These were previously grouped together in the two domain system as Prokaryotes, the other being the eukaryotes. The third domain Eukaryota includes all multicellular organisms and many unicellular protists and protozoans. Some protists are related to animals and some to green plants. Many of the multicellular organisms are microscopic, namely micro-animals, some fungi and some algae, but these are not discussed here. They live in almost every habitat from the poles to the equator, deserts, geysers, rocks and the deep sea. Some are adapted to extremes such as very hot or very cold conditions, others to high pressure and a few such as Deinococcus radiodurans to high radiation environments. Microorganisms also make up the microbiota found in and on all multicellular organisms. A December 2017 report stated that 3.45 billion year old Australian rocks once contained microorganisms, the earliest direct evidence of life on Earth. Microbes are important in human culture and health in many ways, serving to ferment foods, treat sewage, produce fuel, enzymes and other bioactive compounds. They are essential tools in biology as model organisms and have been put to use in biological warfare and bioterrorism. They are a vital component of fertile soils. In the human body microorganisms make up the human microbiota including the essential gut flora. They are the pathogens responsible for many infectious diseases and as such are the target of hygiene measures.

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Mitochondrial shuttle

The mitochondrial shuttles are systems used to transport reducing agents across the inner mitochondrial membrane.

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Mitochondrion

The mitochondrion (plural mitochondria) is a double-membrane-bound organelle found in most eukaryotic organisms.

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Model organism

A model organism is a non-human species that is extensively studied to understand particular biological phenomena, with the expectation that discoveries made in the organism model will provide insight into the workings of other organisms.

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Moiety (chemistry)

In organic chemistry, a moiety is a part of a molecule.

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Molar attenuation coefficient

The molar attenuation coefficient is a measurement of how strongly a chemical species attenuates light at a given wavelength.

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Molar concentration

Molar concentration (also called molarity, amount concentration or substance concentration) is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.

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Mole (unit)

The mole, symbol mol, is the SI unit of amount of substance.

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Mycobacterium tuberculosis

Mycobacterium tuberculosis is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis.

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Mycophenolic acid

Mycophenolic acid, less accurately called mycophenolate, is an immunosuppressant drug used to prevent rejection in organ transplantation.

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NAD+ kinase

NAD+ kinase (EC 2.7.1.23, NADK) is an enzyme that converts nicotinamide adenine dinucleotide (NAD+) into NADP+ through phosphorylating the NAD+ coenzyme.

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NADH dehydrogenase

NADH dehydrogenase (cytochrome c reductase, type 1 dehydrogenase, beta-NADH dehydrogenase dinucleotide, diaphorase, dihydrocodehydrogenase I dehydrogenase, dihydronicotinamide adenine dinucleotide dehydrogenase, diphosphopyridine diaphorase, DPNH diaphorase, NADH diaphorase, NADH hydrogenase, NADH oxidoreductase, NADH-menadione oxidoreductase, reduced diphosphopyridine nucleotide diaphorase) is an enzyme with systematic name NADH:acceptor oxidoreductase.

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Nanometre

The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (m).

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Nanosecond

A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, 1/1,000,000,000 of a second, or 10 seconds.

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Nerve

A nerve is an enclosed, cable-like bundle of axons (nerve fibers, the long and slender projections of neurons) in the peripheral nervous system.

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Neurodegeneration

Neurodegeneration is the progressive loss of structure or function of neurons, including death of neurons.

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Neuron

A neuron, also known as a neurone (British spelling) and nerve cell, is an electrically excitable cell that receives, processes, and transmits information through electrical and chemical signals.

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Neurotransmitter

Neurotransmitters are endogenous chemicals that enable neurotransmission.

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Niacin

Niacin, also known as nicotinic acid, is an organic compound and a form of vitamin B3, an essential human nutrient.

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Nicotinamidase

In enzymology, a nicotinamidase is an enzyme that catalyzes the chemical reaction Thus, the two substrates of this enzyme are nicotinamide and H2O, whereas its two products are nicotinate and NH3.

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Nicotinamide

Nicotinamide (NAA), also known as niacinamide, is a form of vitamin B3 found in food and used as a dietary supplement and medication.

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Nicotinamide adenine dinucleotide phosphate

Nicotinamide adenine dinucleotide phosphate, abbreviated NADP or, in older notation, TPN (triphosphopyridine nucleotide), is a cofactor used in anabolic reactions, such as lipid and nucleic acid synthesis, which require NADPH as a reducing agent.

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Nicotinamide riboside

Nicotinamide riboside (NR) is a pyridine-nucleoside form of vitamin B3 that functions as a precursor to nicotinamide adenine dinucleotide or NAD+.

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Nitrification

Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate.

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Nitrite oxidoreductase

Nitrite oxidoreductase (NOR or NXR) is an enzyme involved in nitrification.

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Nitrobacter

Nitrobacter is a genus comprising rod-shaped, gram-negative, and chemoautotrophic bacteria.

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Nucleic acid nomenclature

Molecular biologists use several shorthand terms when referring to nucleic acid molecules, such as DNA and RNA, collectively referred to as nucleic acid nomenclature.

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Nucleoside

Nucleosides are glycosylamines that can be thought of as nucleotides without a phosphate group.

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Nucleosome

A nucleosome is a basic unit of DNA packaging in eukaryotes, consisting of a segment of DNA wound in sequence around eight histone protein cores.

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Nucleotide

Nucleotides are organic molecules that serve as the monomer units for forming the nucleic acid polymers deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth.

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Nucleotide salvage

A salvage pathway is a pathway in which nucleotides (purine and pyrimidine) are synthesized from intermediates in the degradative pathway for nucleotides.

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Organelle

In cell biology, an organelle is a specialized subunit within a cell that has a specific function, in which their function is vital for the cell to live.

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Otto Heinrich Warburg

Otto Heinrich Warburg (8 October 1883 – 1 August 1970), son of physicist Emil Warburg, was a German physiologist, medical doctor, and Nobel laureate.

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Oxidative phosphorylation

Oxidative phosphorylation (or OXPHOS in short) (UK, US) is the metabolic pathway in which cells use enzymes to oxidize nutrients, thereby releasing energy which is used to produce adenosine triphosphate (ATP).

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Oxidizing agent

In chemistry, an oxidizing agent (oxidant, oxidizer) is a substance that has the ability to oxidize other substances — in other words to cause them to lose electrons.

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Oxidoreductase

In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule, the reductant, also called the electron donor, to another, the oxidant, also called the electron acceptor.

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Parkinson's disease

Parkinson's disease (PD) is a long-term degenerative disorder of the central nervous system that mainly affects the motor system.

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Pathogen

In biology, a pathogen (πάθος pathos "suffering, passion" and -γενής -genēs "producer of") or a '''germ''' in the oldest and broadest sense is anything that can produce disease; the term came into use in the 1880s.

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Pellagra

Pellagra is a disease caused by a lack of the vitamin niacin (vitamin B3).

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Peroxidase

Peroxidases (EC number) are a large family of enzymes that typically catalyze a reaction of the form: For many of these enzymes the optimal substrate is hydrogen peroxide, but others are more active with organic hydroperoxides such as lipid peroxides.

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PH

In chemistry, pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution.

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Pharmacology

Pharmacology is the branch of biology concerned with the study of drug action, where a drug can be broadly defined as any man-made, natural, or endogenous (from within body) molecule which exerts a biochemical or physiological effect on the cell, tissue, organ, or organism (sometimes the word pharmacon is used as a term to encompass these endogenous and exogenous bioactive species).

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Phosphate

A phosphate is chemical derivative of phosphoric acid.

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Phosphodiester bond

A phosphodiester bond occurs when exactly two of the hydroxyl groups in phosphoric acid react with hydroxyl groups on other molecules to form two ester bonds.

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Phosphorylation

In chemistry, phosphorylation of a molecule is the attachment of a phosphoryl group.

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Photosynthesis

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities (energy transformation).

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Poly (ADP-ribose) polymerase

Poly (ADP-ribose) polymerase (PARP) is a family of proteins involved in a number of cellular processes such as DNA repair, genomic stability, and programmed cell death.

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Polyphosphate

Polyphosphates are salts or esters of polymeric oxyanions formed from tetrahedral PO4 (phosphate) structural units linked together by sharing oxygen atoms.

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Post-translational modification

Post-translational modification (PTM) refers to the covalent and generally enzymatic modification of proteins following protein biosynthesis.

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Prochirality

In stereochemistry, prochiral molecules are those that can be converted from achiral to chiral in a single step.

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Prodrug

A prodrug is a medication or compound that, after administration, is metabolized (i.e., converted within the body) into a pharmacologically active drug.

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Protein

Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.

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Protein Data Bank

The Protein Data Bank (PDB) is a crystallographic database for the three-dimensional structural data of large biological molecules, such as proteins and nucleic acids.

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Proton

| magnetic_moment.

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Purine metabolism

Purine metabolism refers to the metabolic pathways to synthesize and break down purines that are present in many organisms.

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Pyrococcus

Pyrococcus is a genus of Thermococcaceaen archaean.

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Pyruvate dehydrogenase

Pyruvate dehydrogenase is the first component enzyme of pyruvate dehydrogenase complex (PDC).

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Quinolinic acid

Quinolinic acid (abbreviated QUIN or QA), also known as pyridine-2,3-dicarboxylic acid, is a dicarboxylic acid with a pyridine backbone.

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Radical (chemistry)

In chemistry, a radical (more precisely, a free radical) is an atom, molecule, or ion that has an unpaired valence electron.

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Redox

Redox (short for reduction–oxidation reaction) (pronunciation: or) is a chemical reaction in which the oxidation states of atoms are changed.

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Reducing agent

A reducing agent (also called a reductant or reducer) is an element (such as calcium) or compound that loses (or "donates") an electron to another chemical species in a redox chemical reaction.

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Resveratrol

Resveratrol (3,5,4′-trihydroxy-trans-stilbene) is a stilbenoid, a type of natural phenol, and a phytoalexin produced by several plants in response to injury or, when the plant is under attack by pathogens such as bacteria or fungi.

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Ribose

Ribose is a carbohydrate with the formula C5H10O5; specifically, it is a pentose monosaccharide (simple sugar) with linear form H−(C.

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RNA

Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes.

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Rossmann fold

The Rossmann fold is a structural motif found in proteins that bind nucleotides, such as enzyme cofactors FAD, NAD+, and NADP+.

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Ryanodine receptor

Ryanodine receptors (RyRs) form a class of intracellular calcium channels in various forms of excitable animal tissue like muscles and neurons.

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Second messenger system

Second messengers are intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules—the first messengers.

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Sigma-Aldrich

Sigma-Aldrich Corporation is an American chemical, life science and biotechnology company owned by Merck KGaA.

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Sirtuin

Sirtuins are a class of proteins that possess either mono-ADP-ribosyltransferase, or deacylase activity, including deacetylase, desuccinylase, demalonylase, demyristoylase and depalmitoylase activity.

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Sirtuin 1

Sirtuin 1, also known as NAD-dependent deacetylase sirtuin-1, is a protein that in humans is encoded by the SIRT1 gene.

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Smooth muscle tissue

Smooth muscle is an involuntary non-striated muscle.

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Spectrophotometry

In chemistry, spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength.

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Stereoisomerism

In stereochemistry, stereoisomers are isomeric molecules that have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space.

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Structural motif

In a chain-like biological molecule, such as a protein or nucleic acid, a structural motif is a supersecondary structure, which also appears in a variety of other molecules.

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Substrate (chemistry)

In chemistry, a substrate is typically the chemical species being observed in a chemical reaction, which reacts with a reagent to generate a product.

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Synaptosome

A synaptosome is an isolated synaptic terminal from a neuron.

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Telomere

A telomere is a region of repetitive nucleotide sequences at each end of a chromosome, which protects the end of the chromosome from deterioration or from fusion with neighboring chromosomes.

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Tiazofurin

Tiazofurin is an inhibitor of IMP dehydrogenase.

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Toxin

A toxin (from toxikon) is a poisonous substance produced within living cells or organisms; synthetic toxicants created by artificial processes are thus excluded.

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Transcription (biology)

Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA (especially mRNA) by the enzyme RNA polymerase.

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Tryptophan

Tryptophan (symbol Trp or W) is an α-amino acid that is used in the biosynthesis of proteins.

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Tuberculosis

Tuberculosis (TB) is an infectious disease usually caused by the bacterium Mycobacterium tuberculosis (MTB).

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Ultraviolet

Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.

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UniProt

UniProt is a freely accessible database of protein sequence and functional information, many entries being derived from genome sequencing projects.

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United Kingdom

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.

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United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

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Urinary bladder

The urinary bladder is a hollow muscular organ in humans and some other animals that collects and stores urine from the kidneys before disposal by urination.

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Vertebrate

Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).

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Vitamin deficiency

A vitamin deficiency can cause a disease or syndrome known as an avitaminosis or hypovitaminosis.

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Volt

The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.

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Wavelength

In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.

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William John Young

William John Young (26 January 1878 – 14 May 1942) was an English biochemist.

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Yeast

Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom.

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C21H27N7O14P2, Coenzyme I, DPN+, Diphosphopyridine nucleotide, NAD(P)H, NAD+, NAD+ in neurodegeneration, NADH, Nadide, Nicotinamide Adenine Dinucleotide, Nicotinamide Adenine Dinucleotide Phosphate, Nicotinamide cofactor, Nicotinate and nicotinamide metabolism, Reduced nicotinamide adenine dinucleotide.

References

[1] https://en.wikipedia.org/wiki/Nicotinamide_adenine_dinucleotide

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