Complement component 1r
Protein-coding gene in humans

Complement C1r subcomponent (EC 3.4.21.41, activated complement C1r, C overbar 1r esterase, C1r) is a protein involved in the complement system of the innate immune system. In humans, C1r is encoded by the C1R gene.
C1r along with C1q and C1s form the C1 complex, which is the first component of the serum complement system. C1r is an enzyme that activates C1s to its active form, by proteolytic cleavage.
01Clinical significance
- Ehlers-Danlos syndrome Periodontal type is associated with mutations in the CR1 gene
02Function
Sources and credits
This article is adapted from the Wikipedia article “Complement component 1r”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Protein C1R PDB 1apq.png by Emw, CC BY-SA 3.0
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