Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!


+ Save concept

Rhodopsin (also known as visual purple) is a light-sensitive receptor protein involved in visual phototransduction. [1]

61 relations: Amino acid, Apoptosis, Archaerhodopsin, Arrestin, Bacteriorhodopsin, Beta-Carotene, Biological pigment, Channelrhodopsin, Chromophore, Cofactor (biochemistry), Color vision, Cone cell, Covalent bond, Cryogenics, Cryptochrome, Cyclic guanosine monophosphate, Cyclic nucleotide phosphodiesterase, Femtosecond, Franz Christian Boll, G protein, G protein–coupled receptor, George Wald, Guanosine monophosphate, Guanylate cyclase, Halorhodopsin, Infrared spectroscopy, Intrinsically photosensitive retinal ganglion cells, Ion channel, Isomerization, Kinase, Light, Lipid bilayer, Lysine, Melanopsin, Opsin, Photobleaching, Photopsin, Phototroph, Picosecond, Prokaryote, Protein, Proteorhodopsin, Proton pump, Receptor (biochemistry), Retina, Retinal, Retinitis pigmentosa, Rod cell, Schiff base, Second messenger system, ..., Sequence homology, Structural Classification of Proteins database, Transducin, Transmembrane domain, Ubiquitin, Ultraviolet–visible spectroscopy, Visual phototransduction, Vitamin A, Wavelength, X-linked congenital stationary night blindness, X-ray crystallography. Expand index (11 more) »

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.

New!!: Rhodopsin and Amino acid · See more »


Apoptosis (from Ancient Greek ἀπόπτωσις "falling off") is a process of programmed cell death that occurs in multicellular organisms.

New!!: Rhodopsin and Apoptosis · See more »


Archaerhodopsin (alternatively known as bacterio-opsin) is a family of receptor proteins that respond to light, found in Archaea.

New!!: Rhodopsin and Archaerhodopsin · See more »


Arrestins (abbreviated Arr) are a small family of proteins important for regulating signal transduction at G protein-coupled receptors.

New!!: Rhodopsin and Arrestin · See more »


Bacteriorhodopsin is a protein used by Archaea, most notably by Halobacteria, a class of the Euryarchaeota.

New!!: Rhodopsin and Bacteriorhodopsin · See more »


β-Carotene is an organic, strongly colored red-orange pigment abundant in plants and fruits.

New!!: Rhodopsin and Beta-Carotene · See more »

Biological pigment

Biological pigments, also known simply as pigments or biochromes, are substances produced by living organisms that have a color resulting from selective color absorption.

New!!: Rhodopsin and Biological pigment · See more »


Channelrhodopsins are a subfamily of retinylidene proteins (rhodopsins) that function as light-gated ion channels.

New!!: Rhodopsin and Channelrhodopsin · See more »


A chromophore is the part of a molecule responsible for its color.

New!!: Rhodopsin and Chromophore · See more »

Cofactor (biochemistry)

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

New!!: Rhodopsin and Cofactor (biochemistry) · See more »

Color vision

Color vision is the ability of an organism or machine to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit.

New!!: Rhodopsin and Color vision · See more »

Cone cell

Cone cells, or cones, are one of three types of photoreceptor cells in the retina of mammalian eyes (e.g. the human eye).

New!!: Rhodopsin and Cone cell · See more »

Covalent bond

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

New!!: Rhodopsin and Covalent bond · See more »


In physics, cryogenics is the production and behaviour of materials at very low temperatures.

New!!: Rhodopsin and Cryogenics · See more »


Cryptochromes (from the Greek κρυπτός χρώμα, "hidden colour") are a class of flavoproteins that are sensitive to blue light.

New!!: Rhodopsin and Cryptochrome · See more »

Cyclic guanosine monophosphate

Cyclic guanosine monophosphate (cGMP) is a cyclic nucleotide derived from guanosine triphosphate (GTP).

New!!: Rhodopsin and Cyclic guanosine monophosphate · See more »

Cyclic nucleotide phosphodiesterase

3'5'-cyclic nucleotide phosphodiesterases are a family of phosphodiesterases.

New!!: Rhodopsin and Cyclic nucleotide phosphodiesterase · See more »


A femtosecond is the SI unit of time equal to 10−15 or 1/1,000,000,000,000,000 of a second; that is, one quadrillionth, or one millionth of one billionth, of a second.

New!!: Rhodopsin and Femtosecond · See more »

Franz Christian Boll

Franz Boll (February 26, 1849, Neubrandenburg – December 19, 1879, Rome) was a German physiologist and histologist.

New!!: Rhodopsin and Franz Christian Boll · See more »

G protein

G proteins, also known as guanine nucleotide-binding proteins, are a family of proteins that act as molecular switches inside cells, and are involved in transmitting signals from a variety of stimuli outside a cell to its interior.

New!!: Rhodopsin and G protein · See more »

G protein–coupled receptor

G protein–coupled receptors (GPCRs), also known as seven-(pass)-transmembrane domain receptors, 7TM receptors, heptahelical receptors, serpentine receptor, and G protein–linked receptors (GPLR), constitute a large protein family of receptors that detect molecules outside the cell and activate internal signal transduction pathways and, ultimately, cellular responses.

New!!: Rhodopsin and G protein–coupled receptor · See more »

George Wald

George David Wald (November 18, 1906 – April 12, 1997) was an American scientist who studied pigments in the retina.

New!!: Rhodopsin and George Wald · See more »

Guanosine monophosphate

Guanosine monophosphate (GMP), also known as 5'-guanidylic acid or guanylic acid (conjugate base guanylate), is a nucleotide that is used as a monomer in RNA.

New!!: Rhodopsin and Guanosine monophosphate · See more »

Guanylate cyclase

Guanylate cyclase (also known as guanyl cyclase, guanylyl cyclase, or GC) is a lyase enzyme.

New!!: Rhodopsin and Guanylate cyclase · See more »


Halorhodopsin is a light-gated ion pump, specific for chloride ions, found in archaea, known as halobacteria.

New!!: Rhodopsin and Halorhodopsin · See more »

Infrared spectroscopy

Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) involves the interaction of infrared radiation with matter.

New!!: Rhodopsin and Infrared spectroscopy · See more »

Intrinsically photosensitive retinal ganglion cells

Intrinsically photosensitive retinal ganglion cells (ipRGCs), also called photosensitive retinal ganglion cells (pRGC), or melanopsin-containing retinal ganglion cells (mRGCs), are a type of neuron in the retina of the mammalian eye.

New!!: Rhodopsin and Intrinsically photosensitive retinal ganglion cells · See more »

Ion channel

Ion channels are pore-forming membrane proteins that allow ions to pass through the channel pore.

New!!: Rhodopsin and Ion channel · See more »


In chemistry isomerization (also isomerisation) is the process by which one molecule is transformed into another molecule which has exactly the same atoms, but the atoms have a different arrangement e.g. A-B-C → B-A-C (these related molecules are known as isomers). In some molecules and under some conditions, isomerization occurs spontaneously.

New!!: Rhodopsin and Isomerization · See more »


In biochemistry, a kinase is an enzyme that catalyzes the transfer of phosphate groups from high-energy, phosphate-donating molecules to specific substrates.

New!!: Rhodopsin and Kinase · See more »


Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.

New!!: Rhodopsin and Light · See more »

Lipid bilayer

The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules.

New!!: Rhodopsin and Lipid bilayer · See more »


Lysine (symbol Lys or K) is an α-amino acid that is used in the biosynthesis of proteins.

New!!: Rhodopsin and Lysine · See more »


Melanopsin is a type of photopigment belonging to a larger family of light-sensitive retinal proteins called opsins and encoded by the gene Opn4.

New!!: Rhodopsin and Melanopsin · See more »


Opsins are a group of proteins, made light-sensitive, via the chromophore retinal found in photoreceptor cells of the retina.

New!!: Rhodopsin and Opsin · See more »


In optics, photobleaching (sometimes termed fading) is the photochemical alteration of a dye or a fluorophore molecule such that it permanently is unable to fluoresce.

New!!: Rhodopsin and Photobleaching · See more »


Photopsins (also known as Cone opsins) are the photoreceptor proteins found in the cone cells of the retina that are the basis of color vision.

New!!: Rhodopsin and Photopsin · See more »


Phototrophs (Gr: φῶς, φωτός.

New!!: Rhodopsin and Phototroph · See more »


A picosecond is an SI unit of time equal to 10−12 or 1/1,000,000,000,000 (one trillionth) of a second.

New!!: Rhodopsin and Picosecond · See more »


A prokaryote is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.

New!!: Rhodopsin and Prokaryote · See more »


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

New!!: Rhodopsin and Protein · See more »


Proteorhodopsin (also known as pRhodopsin) is a family of over 50 photoactive retinylidene proteins, a larger family of transmembrane proteins that use retinal as a chromophore for light-mediated functionality, in this case, a proton pump.

New!!: Rhodopsin and Proteorhodopsin · See more »

Proton pump

A proton pump is an integral membrane protein that builds up a proton gradient across a biological membrane.

New!!: Rhodopsin and Proton pump · See more »

Receptor (biochemistry)

In biochemistry and pharmacology, a receptor is a protein molecule that receives chemical signals from outside a cell.

New!!: Rhodopsin and Receptor (biochemistry) · See more »


The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.

New!!: Rhodopsin and Retina · See more »


Retinal is also known as retinaldehyde.

New!!: Rhodopsin and Retinal · See more »

Retinitis pigmentosa

Retinitis pigmentosa (RP) is a genetic disorder of the eyes that causes loss of vision.

New!!: Rhodopsin and Retinitis pigmentosa · See more »

Rod cell

Rod cells are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor, cone cells.

New!!: Rhodopsin and Rod cell · See more »

Schiff base

A Schiff base (named after Hugo Schiff) is a compound with the general structure R2C.

New!!: Rhodopsin and Schiff base · See more »

Second messenger system

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

New!!: Rhodopsin and Second messenger system · See more »

Sequence homology

Sequence homology is the biological homology between DNA, RNA, or protein sequences, defined in terms of shared ancestry in the evolutionary history of life.

New!!: Rhodopsin and Sequence homology · See more »

Structural Classification of Proteins database

The Structural Classification of Proteins (SCOP) database is a largely manual classification of protein structural domains based on similarities of their structures and amino acid sequences.

New!!: Rhodopsin and Structural Classification of Proteins database · See more »


Transducin (Gt) is a protein naturally expressed in vertebrate retina rods and cones and it is very important in vertebrate phototransduction.

New!!: Rhodopsin and Transducin · See more »

Transmembrane domain

Transmembrane domain usually denotes a transmembrane segment of single alpha helix of a transmembrane protein.

New!!: Rhodopsin and Transmembrane domain · See more »


Ubiquitin is a small (8.5 kDa) regulatory protein found in most tissues of eukaryotic organisms, i.e. it occurs ''ubiquitously''.

New!!: Rhodopsin and Ubiquitin · See more »

Ultraviolet–visible spectroscopy

Ultraviolet–visible spectroscopy or ultraviolet–visible spectrophotometry (UV–Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet-visible spectral region.

New!!: Rhodopsin and Ultraviolet–visible spectroscopy · See more »

Visual phototransduction

Visual phototransduction is the sensory transduction of the visual system.

New!!: Rhodopsin and Visual phototransduction · See more »

Vitamin A

Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene).

New!!: Rhodopsin and Vitamin A · See more »


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

New!!: Rhodopsin and Wavelength · See more »

X-linked congenital stationary night blindness

X-linked congenital stationary night blindness (CSNB) is a rare X-linked non-progressive retinal disorder.

New!!: Rhodopsin and X-linked congenital stationary night blindness · See more »

X-ray crystallography

X-ray crystallography is a technique used for determining the atomic and molecular structure of a crystal, in which the crystalline atoms cause a beam of incident X-rays to diffract into many specific directions.

New!!: Rhodopsin and X-ray crystallography · See more »

Redirects here:

Activated rhodopsin, Ensembl-ENSG00000163914, Ensembl:ENSG00000163914, RHO (gene), Retinal rhodopsin, Rhodepsin, Rhodopsins, microbial, Scotopsin, UID/Ensembl/ENSG00000163914, Visual purple.


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

Hey! We are on Facebook now! »