Gene Information
Gene NameCFI
OrganismHomo sapiens (Human)
Gene Length583
Protein NamesComplement factor I (EC 3.4.21.45) (C3B/C4B inactivator) [Cleaved into: Complement factor I heavy chain; Complement factor I light chain]
Target Namecomplement factor i
Target TypeNA
Gene Age950 ( ENSG00000205403 )
Evolutionary StageEumetazoa
AlphaFoldDBP05156
Gene CardCFI
Uniprot IDP05156
PfamPF00057; PF00530; PF00089
In ASDyes
Allosteric Predictionyes (0.691816112)
Ortholog in AnimalsAlpaca_ CFI ( ortholog_one2one )
Dog_ CFI ( ortholog_one2one )
GuineaPig_ CFI ( ortholog_one2one )
Macaque_ CFI ( ortholog_one2one )
Mouse_ Cfi ( ortholog_one2one )
Pig_ CFI ( ortholog_one2one )
Rat_ Cfi ( ortholog_one2one )
Rabbit_ CFI ( ortholog_one2one )
OhnologsNA
ParalogsHGFAC, F7, C1R, KLK10, F9, F12, F10, CFD, PRSS55, PRSS51, C1S, C1RL, HP, HPR, KLKB1, F11
TissueNA
Tissue SpecificityExpressed in the liver by hepatocytes (PubMed:6327681). Also present in other cells such as monocytes, fibroblasts or keratinocytes (PubMed:6444659, PubMed:17320177). {ECO:0000269|PubMed:17320177, ECO:0000269|PubMed:6327681, ECO:0000269|PubMed:6444659}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 2XRC  (X-ray  2.69A  5O32  (X-ray  4.21A 
DBSNP rs773187287  rs141853578  rs75612300  rs121964916  rs182078921  rs11098044  rs121964917  rs769419740  rs61733901  rs121964912  rs121964918  rs121964914 
Subcellular location [CC]Secreted, extracellular space. Secreted {ECO:0000269|PubMed:6327681}.
Mouse PG classificationNA
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