Free for academic non-profit institutions. Other users need a Commercial license

Aliases for HLA-DPA1 Gene

Aliases for HLA-DPA1 Gene

  • Major Histocompatibility Complex, Class II, DP Alpha 1 2 3
  • MHC Class II DP3-Alpha 3 4
  • HLA-SB Alpha Chain 3 4
  • HLA-DP1A 3 4
  • DP(W3) 3 4
  • DP(W4) 3 4
  • HLADP 3 6
  • HLASB 3 4
  • HLA Class II Histocompatibility Antigen, DP Alpha 1 Chain 3
  • MHC Class II HLA-DPA1 Antigen 3
  • Primed Lymphocyte Test-1 3
  • MHC Class II Antigen 3
  • MHC Class II DPA1 4
  • PLT1 3

External Ids for HLA-DPA1 Gene

Previous Symbols for HLA-DPA1 Gene

  • HLA-DP1A

Summaries for HLA-DPA1 Gene

Entrez Gene Summary for HLA-DPA1 Gene

  • HLA-DPA1 belongs to the HLA class II alpha chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DPA) and a beta (DPB) chain, 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 and its gene contains 5 exons. Exon one encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, exon 4 encodes the transmembrane domain and the cytoplasmic tail. Within the DP molecule both the alpha chain and the beta chain contain the polymorphisms specifying the peptide binding specificities, resulting in up to 4 different molecules. [provided by RefSeq, Jul 2008]

GeneCards Summary for HLA-DPA1 Gene

HLA-DPA1 (Major Histocompatibility Complex, Class II, DP Alpha 1) is a Protein Coding gene. Diseases associated with HLA-DPA1 include berylliosis and acute disseminated encephalomyelitis. Among its related pathways are Class I MHC mediated antigen processing and presentation and GPCR Pathway. GO annotations related to this gene include MHC class II receptor activity. An important paralog of this gene is HLA-DMA.

UniProtKB/Swiss-Prot for HLA-DPA1 Gene

  • Binds peptides derived from antigens that access the endocytic route of antigen presenting cells (APC) and presents them on the cell surface for recognition by the CD4 T-cells. The peptide binding cleft accommodates peptides of 10-30 residues. The peptides presented by MHC class II molecules are generated mostly by degradation of proteins that access the endocytic route, where they are processed by lysosomal proteases and other hydrolases. Exogenous antigens that have been endocytosed by the APC are thus readily available for presentation via MHC II molecules, and for this reason this antigen presentation pathway is usually referred to as exogenous. As membrane proteins on their way to degradation in lysosomes as part of their normal turn-over are also contained in the endosomal/lysosomal compartments, exogenous antigens must compete with those derived from endogenous components. Autophagy is also a source of endogenous peptides, autophagosomes constitutively fuse with MHC class II loading compartments. In addition to APCs, other cells of the gastrointestinal tract, such as epithelial cells, express MHC class II molecules and CD74 and act as APCs, which is an unusual trait of the GI tract. To produce a MHC class II molecule that presents an antigen, three MHC class II molecules (heterodimers of an alpha and a beta chain) associate with a CD74 trimer in the ER to form a heterononamer. Soon after the entry of this complex into the endosomal/lysosomal system where antigen processing occurs, CD74 undergoes a sequential degradation by various proteases, including CTSS and CTSL, leaving a small fragment termed CLIP (class-II-associated invariant chain peptide). The removal of CLIP is facilitated by HLA-DM via direct binding to the alpha-beta-CLIP complex so that CLIP is released. HLA-DM stabilizes MHC class II molecules until primary high affinity antigenic peptides are bound. The MHC II molecule bound to a peptide is then transported to the cell membrane surface. In B-cells, the interaction between HLA-DM and MHC class II molecules is regulated by HLA-DO. Primary dendritic cells (DCs) also to express HLA-DO. Lysosomal microenvironment has been implicated in the regulation of antigen loading into MHC II molecules, increased acidification produces increased proteolysis and efficient peptide loading

No data available for Tocris Summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for HLA-DPA1 Gene

Genomics for HLA-DPA1 Gene

Genomic Location for HLA-DPA1 Gene

Start:
33,064,569 bp from pter
End:
33,080,778 bp from pter
Size:
16,210 bases
Orientation:
Minus strand

Genomic View for HLA-DPA1 Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for HLA-DPA1 Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

Regulatory Elements for HLA-DPA1 Gene

Proteins for HLA-DPA1 Gene

  • Protein details for HLA-DPA1 Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    P20036-DPA1_HUMAN
    Recommended name:
    HLA class II histocompatibility antigen, DP alpha 1 chain
    Protein Accession:
    P20036
    Secondary Accessions:
    • A9YWH7
    • B9UKH4
    • O19722
    • O46883
    • P01905
    • P79554
    • Q2Q060
    • Q2Q061
    • Q5EY03
    • Q5STP1
    • Q6DQK4
    • Q9BCQ1
    • Q9TPX3
    • Q9XS10

    Protein attributes for HLA-DPA1 Gene

    Size:
    260 amino acids
    Molecular mass:
    29381 Da
    Quaternary structure:
    • Heterodimer of an alpha and a beta subunit; also referred as MHC class II molecule. In the endoplasmic reticulum (ER) it forms a heterononamer; 3 MHC class II molecules bind to a CD74 homotrimer (also known as invariant chain or HLA class II histocompatibility antigen gamma chain). In the endosomal/lysosomal system; CD74 undergoes sequential degradation by various proteases; leaving a small fragment termed CLIP on each MHC class II molecule. MHC class II molecule interacts with HLA_DM, and HLA_DO in B-cells, in order to release CLIP and facilitate the binding of antigenic peptides
    SequenceCaution:
    • Sequence=AAC64233.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305}; Sequence=AAD42927.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};

    Three dimensional structures from OCA and Proteopedia for HLA-DPA1 Gene

neXtProt entry for HLA-DPA1 Gene

Proteomics data for HLA-DPA1 Gene at MOPED

Post-translational modifications for HLA-DPA1 Gene

  • Modification sites at PhosphoSitePlus
  • Glycosylation at Asn109 and Asn149

Other Protein References for HLA-DPA1 Gene

ENSEMBL proteins:
Reactome Protein details:
REFSEQ proteins:

No data available for DME Specific Peptides for HLA-DPA1 Gene

Domains for HLA-DPA1 Gene

Gene Families for HLA-DPA1 Gene

HGNC:
  • C1SET :Immunoglobulin superfamily / C1-set domain containing
  • HLA :Histocompatibility complex

Graphical View of Domain Structure for InterPro Entry

P20036

UniProtKB/Swiss-Prot:

DPA1_HUMAN
Domain:
  • Contains 1 Ig-like C1-type (immunoglobulin-like) domain.:
    • P20036
Family:
  • Belongs to the MHC class II family.:
    • P20036
genes like me logo Genes that share domains with HLA-DPA1: view

Function for HLA-DPA1 Gene

Molecular function for HLA-DPA1 Gene

GENATLAS Biochemistry: HLA-DP,alpha chain
UniProtKB/Swiss-Prot Function: Binds peptides derived from antigens that access the endocytic route of antigen presenting cells (APC) and presents them on the cell surface for recognition by the CD4 T-cells. The peptide binding cleft accommodates peptides of 10-30 residues. The peptides presented by MHC class II molecules are generated mostly by degradation of proteins that access the endocytic route, where they are processed by lysosomal proteases and other hydrolases. Exogenous antigens that have been endocytosed by the APC are thus readily available for presentation via MHC II molecules, and for this reason this antigen presentation pathway is usually referred to as exogenous. As membrane proteins on their way to degradation in lysosomes as part of their normal turn-over are also contained in the endosomal/lysosomal compartments, exogenous antigens must compete with those derived from endogenous components. Autophagy is also a source of endogenous peptides, autophagosomes constitutively fuse with MHC class II loading compartments. In addition to APCs, other cells of the gastrointestinal tract, such as epithelial cells, express MHC class II molecules and CD74 and act as APCs, which is an unusual trait of the GI tract. To produce a MHC class II molecule that presents an antigen, three MHC class II molecules (heterodimers of an alpha and a beta chain) associate with a CD74 trimer in the ER to form a heterononamer. Soon after the entry of this complex into the endosomal/lysosomal system where antigen processing occurs, CD74 undergoes a sequential degradation by various proteases, including CTSS and CTSL, leaving a small fragment termed CLIP (class-II-associated invariant chain peptide). The removal of CLIP is facilitated by HLA-DM via direct binding to the alpha-beta-CLIP complex so that CLIP is released. HLA-DM stabilizes MHC class II molecules until primary high affinity antigenic peptides are bound. The MHC II molecule bound to a peptide is then transported to the cell membrane surface. In B-cells, the interaction between HLA-DM and MHC class II molecules is regulated by HLA-DO. Primary dendritic cells (DCs) also to express HLA-DO. Lysosomal microenvironment has been implicated in the regulation of antigen loading into MHC II molecules, increased acidification produces increased proteolysis and efficient peptide loading

Gene Ontology (GO) - Molecular Function for HLA-DPA1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005515 protein binding --
GO:0032395 MHC class II receptor activity NAS 2461352
GO:0042605 peptide antigen binding IDA 20356827
genes like me logo Genes that share ontologies with HLA-DPA1: view

No data available for Enzyme Numbers (IUBMB) , Phenotypes , Animal Models , miRNA , Transcription Factor Targeting and HOMER Transcription for HLA-DPA1 Gene

Localization for HLA-DPA1 Gene

Subcellular locations from UniProtKB/Swiss-Prot for HLA-DPA1 Gene

Cell membrane; Single-pass type I membrane protein. Endoplasmic reticulum membrane; Single-pass type I membrane protein. Golgi apparatus, trans-Golgi network membrane; Single-pass type I membrane protein. Endosome membrane; Single-pass type I membrane protein. Lysosome membrane; Single-pass type I membrane protein. Note=The MHC class II complex transits through a number of intracellular compartments in the endocytic pathway until it reaches the cell membrane for antigen presentation.

Subcellular locations from

COMPARTMENTS
Jensen Localization Image for HLA-DPA1 Gene COMPARTMENTS Subcellular localization image for HLA-DPA1 gene
Compartment Confidence
endoplasmic reticulum 5
endosome 5
lysosome 5
plasma membrane 5
vacuole 5
golgi apparatus 4
extracellular 1
peroxisome 1

Gene Ontology (GO) - Cellular Components for HLA-DPA1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0000139 Golgi membrane TAS --
GO:0005765 lysosomal membrane TAS --
GO:0005768 endosome --
GO:0005886 plasma membrane TAS --
GO:0005887 integral component of plasma membrane NAS 2461352
genes like me logo Genes that share ontologies with HLA-DPA1: view

Pathways for HLA-DPA1 Gene

genes like me logo Genes that share pathways with HLA-DPA1: view

Interacting Proteins for HLA-DPA1 Gene

Gene Ontology (GO) - Biological Process for HLA-DPA1 Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0002504 antigen processing and presentation of peptide or polysaccharide antigen via MHC class II --
GO:0006955 immune response NAS 2461352
GO:0019221 cytokine-mediated signaling pathway TAS --
GO:0019882 antigen processing and presentation --
GO:0019886 antigen processing and presentation of exogenous peptide antigen via MHC class II TAS --
genes like me logo Genes that share ontologies with HLA-DPA1: view

Compounds for HLA-DPA1 Gene

(1) Novoseek inferred chemical compound relationships for HLA-DPA1 Gene

Compound -log(P) Hits PubMed IDs
dpa 1 95 4
genes like me logo Genes that share compounds with HLA-DPA1: view

Transcripts for HLA-DPA1 Gene

Unigene Clusters for HLA-DPA1 Gene

Major histocompatibility complex, class II, DP alpha 1:
Representative Sequences:

Alternative Splicing Database (ASD) splice patterns (SP) for HLA-DPA1 Gene

No ASD Table

Relevant External Links for HLA-DPA1 Gene

GeneLoc Exon Structure for
HLA-DPA1
ECgene alternative splicing isoforms for
HLA-DPA1

Expression for HLA-DPA1 Gene

mRNA expression in normal human tissues for HLA-DPA1 Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

mRNA differential expression in normal tissues according to GTEx for HLA-DPA1 Gene

This gene is overexpressed in Whole Blood (4.2) and Spleen (4.0).

Integrated Proteomics: protein expression from ProteomicsDB, PaxDb, MOPED, and MaxQB for HLA-DPA1 Gene

SOURCE GeneReport for Unigene cluster for HLA-DPA1 Gene Hs.347270

genes like me logo Genes that share expressions with HLA-DPA1: view

No data available for mRNA Expression by UniProt/SwissProt for HLA-DPA1 Gene

Orthologs for HLA-DPA1 Gene

This gene was present in the common ancestor of chordates.

Orthologs for HLA-DPA1 Gene

Organism Taxonomy Gene Similarity Type Details
chimpanzee
(Pan troglodytes)
Mammalia PATR-DPA1 35
  • 97.95 (n)
  • 95.77 (a)
PATR-DPA1 36
  • 96 (a)
OneToOne
cow
(Bos Taurus)
Mammalia BOLA-DYA 36
  • 56 (a)
ManyToMany
mouse
(Mus musculus)
Mammalia H2-Pa 16
lizard
(Anolis carolinensis)
Reptilia -- 36
  • 58 (a)
ManyToMany
-- 36
  • 54 (a)
ManyToMany
zebrafish
(Danio rerio)
Actinopterygii LOC100332204 35
  • 47.43 (n)
  • 39.02 (a)
si:busm1-160c18.1 36
  • 30 (a)
ManyToMany
Species with no ortholog for HLA-DPA1:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • African malaria mosquito (Anopheles gambiae)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • baker's yeast (Saccharomyces cerevisiae)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • chicken (Gallus gallus)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • dog (Canis familiaris)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • fruit fly (Drosophila melanogaster)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • oppossum (Monodelphis domestica)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • platypus (Ornithorhynchus anatinus)
  • rainbow trout (Oncorhynchus mykiss)
  • rat (Rattus norvegicus)
  • rice (Oryza sativa)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea squirt (Ciona intestinalis)
  • sea squirt (Ciona savignyi)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • tropical clawed frog (Silurana tropicalis)
  • wheat (Triticum aestivum)
  • worm (Caenorhabditis elegans)

Evolution for HLA-DPA1 Gene

ENSEMBL:
Gene Tree for HLA-DPA1 (if available)
TreeFam:
Gene Tree for HLA-DPA1 (if available)

Paralogs for HLA-DPA1 Gene

genes like me logo Genes that share paralogs with HLA-DPA1: view

Variants for HLA-DPA1 Gene

Polymorphic Variants from UniProtKB/Swiss-Prot for HLA-DPA1 Gene

P20036-DPA1_HUMAN
The following alleles of DPA1 are known: DPA1*01:03, DPA1*01:04, DPA1*01:05, DPA1*01:06, DPA1*01:07, DPA1*01:08, DPA1*01:09, DPA1*01:10, DPA1*02:01, DPA1*02:02, DPA1*02:03, DPA1*02:04, DPA1*03:01, DPA1*03:02, DPA1*03:03, DPA1*04:01 The sequence shown is that of DPA1*01:03

Sequence variations from dbSNP and Humsavar for HLA-DPA1 Gene

SNP ID Clin Chr 06 pos Sequence Context AA Info Type MAF
rs3077 -- 33,065,245(-) ACTAC(C/T)CCAGT utr-variant-3-prime
rs7905 -- 33,065,198(-) TATCC(A/G)TTACC utr-variant-3-prime
rs8486 -- 33,065,191(-) TACCT(A/C/G/T)AAAGC utr-variant-3-prime
rs8807 -- 33,065,074(-) GAAGA(A/G)CCCCT utr-variant-3-prime
rs361527 -- 33,065,143(-) AATGA(-/ATAAATGTTGA)CACTT utr-variant-3-prime

Structural Variations from Database of Genomic Variants (DGV) for HLA-DPA1 Gene

Variant ID Type Subtype PubMed ID
nsv819387 CNV Loss 19587683
nsv885754 CNV Gain 21882294
esv22467 CNV Loss 19812545
dgv1039n67 CNV Loss 20364138
esv2545651 CNV Loss 19546169
nsv823641 CNV Loss 20364138
dgv6826n71 CNV Loss 21882294
dgv6827n71 CNV Loss 21882294
nsv885759 CNV Loss 21882294
nsv885760 CNV Loss 21882294
nsv823645 CNV Loss 20364138
nsv885763 CNV Loss 21882294
nsv823646 CNV Loss 20364138
esv1006913 CNV Gain 20482838
nsv823647 CNV Loss 20364138
esv2731879 CNV Deletion 23290073
nsv823648 CNV Loss 20364138
nsv823649 CNV Loss 20364138
nsv885764 CNV Loss 21882294
nsv823650 CNV Loss 20364138
dgv1040n67 CNV Loss 20364138

Relevant External Links for HLA-DPA1 Gene

HapMap Linkage Disequilibrium report
HLA-DPA1
Locus Specific Mutation Databases (LSDB)
HLA-DPA1

Disorders for HLA-DPA1 Gene

(2) Novoseek inferred disease relationships for HLA-DPA1 Gene

Disease -log(P) Hits PubMed IDs
celiac disease 39.7 2
lupus erythematosus systemic 17.7 3

Relevant External Links for HLA-DPA1

Genetic Association Database (GAD)
HLA-DPA1
Human Genome Epidemiology (HuGE) Navigator
HLA-DPA1
genes like me logo Genes that share disorders with HLA-DPA1: view

No data available for UniProtKB/Swiss-Prot for HLA-DPA1 Gene

Publications for HLA-DPA1 Gene

  1. Isotypic and allotypic variation of human class II histocompatibility antigen alpha-chain genes. (PMID: 6584734) Auffray C. … Strominger J.L. (Nature 1984) 2 3 4
  2. Three new DP alleles identified in sub-Saharan Africa: DPB1*7401, DPA1*02013, and DPA1*0302. (PMID: 9694359) Steiner L.L. … Begovich A.B. (Tissue Antigens 1998) 3 4
  3. Sequences related to HLA-DR alpha chain on human chromosome 6: restriction enzyme polymorphism detected with DC alpha chain probes. (PMID: 6300884) Trowsdale J. … Bodmer W. (Proc. Natl. Acad. Sci. U.S.A. 1983) 3 4
  4. A new HLA-DPA1 allele, DPA1*02016, identified in African-American population. (PMID: 11019928) McDaniel D.O. … McDaniel L.S. (Tissue Antigens 2000) 3 4
  5. HLA-DPA1 and DPB1 polymorphism in four Pacific Islands populations determined by sequencing based typing. (PMID: 11556979) Velickovic Z.M. … Carter J.M. (Tissue Antigens 2001) 3 48

Products for HLA-DPA1 Gene

Sources for HLA-DPA1 Gene

Back to Top

Content