Entrez Summary: This gene encodes a serine protease, which is a major constituent of the human complement subcomponent C1. C1s associates with two other complement components C1r and C1q in order to yield the first component of the serum complement system. Defects in this gene are the cause of selective C1s deficiency. [provided by RefSeq, Mar 2009].
UniProt Summary: N/A
Pfam DomainsGO Terms
Pfam Domains
Trypsin
CUB
Sushi
GO Terms
regulation of complement activation
regulation of humoral immune response
blood microparticle
complement activation, classical pathway
serine-type endopeptidase activity
humoral immune response mediated by circulating immunoglobulin
complement activation
immunoglobulin mediated immune response
B cell mediated immunity
lymphocyte mediated immunity
adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains
humoral immune response
regulation of immune effector process
adaptive immune response
activation of immune response
calcium ion binding
innate immune response
leukocyte mediated immunity
positive regulation of immune response
defense response to other organism
identical protein binding
immune effector process
regulation of immune response
positive regulation of immune system process
proteolysis
response to other organism
response to external biotic stimulus
response to biotic stimulus
defense response
extracellular space
regulation of immune system process
immune response
extracellular region
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)