Gene Information
Gene NameCR1
OrganismHomo sapiens (Human)
Gene Length2039
Protein NamesComplement receptor type 1 (C3b/C4b receptor) (CD antigen CD35)
Target Namecomplement receptor type 1
Target TypeClinical trial target
Gene Age382 ( ENSG00000203710 )
Evolutionary StageEumetazoa
AlphaFoldDBP17927
Gene CardCR1
Uniprot IDP17927
PfamPF00084
In ASDno
Allosteric Predictionyes (0.818619783)
Ortholog in AnimalsAlpaca_ CR1 ( ortholog_one2one )
Dog_ CR1L ( ortholog_one2one )
Mouse_ Cr1l ( ortholog_one2one )
Rat_ Cr1l ( ortholog_one2one )
OhnologsSVEP1
ParalogsCR1L, SUSD3, F13B, SELP, SEZ6L2, CFHR2, CFHR1, CSMD1, APOH, SELE, SRPX, SVEP1, SEZ6, C8A, CD55, CSMD2, PAPPA2, SUSD6, C4BPA, C9, PAPPA, SELL, CFB, CD46, C4BPB, CR2, C7, CSMD3, CFHR3, CFH, SEZ6L, CFHR4, CFHR5, SRPX2, C8B, PRF1, SUSD4, C6, C2
Tissueappendix, lymph.node, spleen, tonsil, whole.blood
Tissue SpecificityPresent on erythrocytes, a subset of T cells, mature B cells, follicular dendritic cells, monocytes and granulocytes. {ECO:0000269|PubMed:1534036, ECO:0000269|PubMed:25742728, ECO:0000269|PubMed:6233222}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1GKG  (NMR  1GKN  (NMR  1PPQ  (NMR  2MCY  (NMR  2MCZ  (NMR  2Q7Z  (X-ray  5FO9  (X-ray  3.30A 
DBSNP rs2274567  rs3737002  rs17259045  rs17047660  rs17047661  rs4844609  rs6691117  rs3811381  rs2296160 
Subcellular location [CC]Membrane {ECO:0000269|PubMed:1385479};
Single-pass type I membrane protein.
Mouse PG classificationNA
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