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C1 complex

Index C1 complex

The C1 complex (complement component 1, C1) is a protein complex involved in the complement system. [1]

19 relations: Antibody, Antigen, C-reactive protein, C3-convertase, Classical complement pathway, Complement component 1q, Complement component 1r, Complement component 1s, Complement component 2, Complement component 3, Complement component 4, Complement system, Immune complex, Immunoglobulin G, Immunoglobulin M, Monomer, Pentamer, Pentraxins, Protein complex.

Antibody

An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses.

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Antigen

In immunology, an antigen is a molecule capable of inducing an immune response (to produce an antibody) in the host organism.

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C-reactive protein

C-reactive protein (CRP) is an annular (ring-shaped), pentameric protein found in blood plasma, whose levels rise in response to inflammation.

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C3-convertase

C3 convertase (C2, C4bC2b, (formerly C4bC2a)C3bBb, complement C.hivin.4.hivin2, complement C3 convertase) belongs to family of serine proteases and is necessary in innate immunity as a part of the complement system which eventuate in opsonisation of particles, release of inflammatory peptides, C5 convertase formation and cell lysis.

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Classical complement pathway

The classical complement pathway is one of three pathways which activate the complement system, which is part of the immune system.

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Complement component 1q

The complement component 1q (or simply C1q) is a protein complex involved in the complement system, which is part of the innate immune system.

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Complement component 1r

Complement C1r subcomponent (activated complement C1r, C overbar 1r esterase, C1r) is a protein involved in the complement system of the innate immune system.

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Complement component 1s

Complement component 1s (C1 esterase, activated complement C1s, complement C overbar 1r, C1s) is a protein involved in the complement system.

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Complement component 2

Complement C2 is a protein that in humans is encoded by the C2 gene.

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Complement component 3

Complement component 3, often simply called C3, is a protein of the immune system.

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Complement component 4

Complement component 4 (C4), in humans, is a protein involved in the intricate complement system, originating from the human leukocyte antigen (HLA) system.

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Complement system

The complement system is a part of the immune system that enhances (complements) the ability of antibodies and phagocytic cells to clear microbes and damaged cells from an organism, promotes inflammation, and attacks the pathogen's cell membrane.

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Immune complex

An immune complex, sometimes called an antigen-antibody complex, is a molecule formed from the integral binding of an antibody to a soluble antigen.

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Immunoglobulin G

Immunoglobulin G (IgG) is a type of antibody.

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Immunoglobulin M

Immunoglobulin M (IgM) is one of several forms of antibody that are produced by vertebrates.

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Monomer

A monomer (mono-, "one" + -mer, "part") is a molecule that "can undergo polymerization thereby contributing constitutional units to the essential structure of a macromolecule".

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Pentamer

A pentamer is an entity composed of five sub-units.

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Pentraxins

Pentraxins (PTX), also known as pentaxins, are an evolutionary conserved family of proteins characterised by containing a pentraxin protein domain.

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Protein complex

A protein complex or multiprotein complex is a group of two or more associated polypeptide chains.

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References

[1] https://en.wikipedia.org/wiki/C1_complex

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