Gene Information
Gene NameCR2
OrganismHomo sapiens (Human)
Gene Length1033
Protein NamesComplement receptor type 2 (Cr2) (Complement C3d receptor) (Epstein-Barr virus receptor) (EBV receptor) (CD antigen CD21)
Target Namecomplement receptor type 2
Target TypeClinical trial target
Gene Age987 ( ENSG00000117322 )
Evolutionary StageEumetazoa
AlphaFoldDBP20023
Gene CardCR2
Uniprot IDP20023
PfamPF00084
In ASDno
Allosteric Predictionyes (0.174022467)
Ortholog in AnimalsAlpaca_ CR2 ( ortholog_one2one )
GuineaPig_ CR2 ( ortholog_one2one )
Macaque_ CR2 ( ortholog_one2one )
Mouse_ Cr2 ( ortholog_one2one )
Rat_ Cr2 ( ortholog_one2one )
Rabbit_ CR2 ( ortholog_one2one )
OhnologsSVEP1
ParalogsCR1L, SUSD3, F13B, SELP, SEZ6L2, CFHR2, CFHR1, CSMD1, APOH, SELE, SRPX, SVEP1, SEZ6, C8A, CD55, CSMD2, PAPPA2, SUSD6, C4BPA, C9, CR1, PAPPA, SELL, CFB, CD46, C4BPB, C7, CSMD3, CFHR3, CFH, SEZ6L, CFHR4, CFHR5, SRPX2, C8B, PRF1, SUSD4, C6, C2
Tissuelymph.node, appendix, spleen, tonsil
Tissue SpecificityMature B-lymphocytes, T-lymphocytes, pharyngeal epithelial cells, astrocytes and follicular dendritic cells of the spleen.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1GHQ  (X-ray  2.04A  1LY2  (X-ray  1.80A  1W2R  (X-ray  1W2S  (X-ray  2ATY  (X-ray  2GSX  (X-ray  3OED  (X-ray  3.16A 
DBSNP rs17615  rs17618  rs17617 
Subcellular location [CC]Cell membrane {ECO:0000269|PubMed:1383329, ECO:0000269|PubMed:1702139};
Single-pass type I membrane protein.
Mouse PG classificationNA
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