Gene Information
Gene NameFCAR
OrganismHomo sapiens (Human)
Gene Length287
Protein NamesImmunoglobulin alpha Fc receptor (IgA Fc receptor) (CD antigen CD89)
Target Nameimmunoglobulin alpha fc receptor
Target TypeDiscontinued target
Gene Age382 ( ENSG00000186431 )
3 ( ENSG00000273738 )
3 ( ENSG00000274580 )
3 ( ENSG00000275136 )
3 ( ENSG00000275269 )
3 ( ENSG00000275564 )
3 ( ENSG00000275970 )
3 ( ENSG00000276858 )
3 ( ENSG00000276985 )
3 ( ENSG00000278415 )
3 ( ENSG00000283750 )
3 ( ENSG00000283953 )
3 ( ENSG00000284004 )
3 ( ENSG00000284061 )
3 ( ENSG00000284245 )
Evolutionary StageVertebrata
AlphaFoldDBP24071
Gene CardFCAR
Uniprot IDP24071
PfamNA
In ASDno
Allosteric Predictionno (-0.114871086)
Ortholog in AnimalsAlpaca_ FCAR ( ortholog_one2many )
Macaque_ FCAR ( ortholog_one2one )
Pig_ FCAR ( ortholog_one2one )
OhnologsNA
ParalogsKIR2DL3, KIR3DL3, KIR3DL2, KIR3DL1, KIR2DS4, KIR2DL4, KIR2DL1, LILRB2, LILRB5, LILRA2, LILRA4, LILRA6, LILRA5, NCR1, LILRB4, LILRB1, LILRA1, LILRB3, GP6, IGSF1, OSCAR, TARM1, VSTM1, LAIR2, A1BG
Tissuebone.marrow, whole.blood
Tissue SpecificityIsoform A.1, isoform A.2 and isoform A.3 are differentially expressed between blood and mucosal myeloid cells. Isoform A.1, isoform A.2 and isoform A.3 are expressed in monocytes. Isoform A.1 and isoform A.2 are expressed in alveolar macrophages;
however only one isoform is expressed at alveolar macrophages surfaces. {ECO:0000269|PubMed:8666819, ECO:0000269|PubMed:8836118}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1OVZ  (X-ray  3.00A  1OW0  (X-ray  3.10A  1UCT  (X-ray  2.10A 
DBSNP rs11666735  rs16986050 
Subcellular location [CC][Isoform A.1]: Cell membrane;
Single-pass type I membrane protein.;
[Isoform A.2]: Cell membrane;
Single-pass type I membrane protein.;
[Isoform A.3]: Cell membrane;
Single-pass type I membrane protein.;
[Isoform B]: Secreted.;
[Isoform B-delta-S2]: Secreted.
Mouse PG classificationNA
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