"Complement C1q" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
A subcomponent of complement C1, composed of six copies of three polypeptide chains (A, B, and C), each encoded by a separate gene (C1QA; C1QB; C1QC). This complex is arranged in nine subunits (six disulfide-linked dimers of A and B, and three disulfide-linked homodimers of C). C1q has binding sites for antibodies (the heavy chain of IMMUNOGLOBULIN G or IMMUNOGLOBULIN M). The interaction of C1q and immunoglobulin activates the two proenzymes COMPLEMENT C1R and COMPLEMENT C1S, thus initiating the cascade of COMPLEMENT ACTIVATION via the CLASSICAL COMPLEMENT PATHWAY.
| Descriptor ID |
D015922
|
| MeSH Number(s) |
D12.776.124.486.274.050.270
|
| Concept/Terms |
Complement C1q- Complement C1q
- C1q, Complement
- Complement Component 1q
- Component 1q, Complement
- C1q Complement
- Complement, C1q
- Complement 1q
|
Below are MeSH descriptors whose meaning is more general than "Complement C1q".
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