MHC class I histocompatibility antigen A alpha chainGo to external page http://purl.obolibrary.org/obo/PR_000002009
An MHC class I histocompatibility antigen alpha chain that is a translation product of the human HLA-A gene, a 1:1 ortholog thereof, or pro-orthologs thereof. [ ]
Category=gene. Pro-orthology refers to, in this case, after-speciation gene duplication in the non-human species (aka 1:many orthology).
HLA class I antigen A alpha chain