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Gene Ontology Classifications
histocompatibility 2, class II antigen A, alpha

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Summary from NCBI RefSeq

[Summary is not available for the mouse gene. This summary is for the human ortholog.] HLA-DQA1 belongs to the HLA class II alpha chain paralogues. The class II molecule is a heterodimer consisting of an alpha (DQA) and a beta chain (DQB), both anchored in the membrane. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. Class II molecules are expressed in antigen presenting cells (APC: B Lymphocytes, dendritic cells, macrophages). The alpha chain is approximately 33-35 kDa. It is encoded by 5 exons; exon 1 encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, and exon 4 encodes the transmembrane domain and the cytoplasmic tail. Within the DQ molecule both the alpha chain and the beta chain contain the polymorphisms specifying the peptide binding specificities, resulting in up to four different molecules. Typing for these polymorphisms is routinely done for bone marrow transplantation. [provided by RefSeq, Jul 2008]

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Gene Ontology Evidence Code Abbreviations:

  EXP Inferred from experiment
  IAS Inferred from ancestral sequence
  IBA Inferred from biological aspect of ancestor
  IBD Inferred from biological aspect of descendant
  IC Inferred by curator
  IDA Inferred from direct assay
  IEA Inferred from electronic annotation
  IGI Inferred from genetic interaction
  IKR Inferred from key residues
  IMP Inferred from mutant phenotype
  IMR Inferred from missing residues
  IPI Inferred from physical interaction
  IRD Inferred from rapid divergence
  ISS Inferred from sequence or structural similarity
  ISO Inferred from sequence orthology
  ISA Inferred from sequence alignment
  ISM Inferred from sequence model
  NAS Non-traceable author statement
  ND No biological data available
  RCA Reviewed computational analysis
  TAS Traceable author statement


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Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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