HLA-A31

HLA-A31
HLA-A31
(MHC Class I, A cell surface antigen)
	HLA-A31
About
Protein	transmembrane receptor/ligand
Structure	αβ heterodimer
Subunits	HLA-A*3101, β2-microglobulin
Older names	A19
Subtypes
Subtype
Subtype	allele
A31	*3101
{{{cNick2}}}	*31{{{cAllele2}}}
{{{cNick3}}}	*31{{{cAllele3}}}
{{{cNick4}}}	*31{{{cAllele4}}}
Rare alleles
Subtype
Subtype	allele
A31.2	*3102
{{{rnick2}}}	*31{{{rallele2}}}
{{{rnick3}}}	*31{{{rallele3}}}
	Alleles link-out to IMGT/HLA database at EBI

HLA-A31 (A31) is a human leukocyte antigen serotype within HLA-A serotype group. The serotype is determined by the antibody recognition of α³¹ subset of HLA-A α-chains. For A31, the alpha "A" chain are encoded by the HLA-A*31 allele group and the β-chain are encoded by B2M locus. This group currently is dominated by A*3101. A31 and A*31 are almost synonymous in meaning. A31 is a split antigen of the broad antigen serotype A19. A31 is a sister serotype of A29, A30, A32, A33, and A74.

A31 is more common in South and Central America.