Entrez Summary: HLA-DOB belongs to the HLA class II beta chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DOA) and a beta chain (DOB), both anchored in the membrane. It is located in intracellular vesicles. DO suppresses peptide loading of MHC class II molecules by inhibiting HLA-DM. Class II molecules are expressed in antigen presenting cells (APC: B lymphocytes, dendritic cells, macrophages). The beta chain is approximately 26-28 kDa and its gene contains 6 exons. Exon one encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, exon 4 encodes the transmembrane domain and exon 5 encodes the cytoplasmic tail. [provided by RefSeq, Jul 2008].
UniProt Summary: Important modulator in the HLA class II restricted antigen presentation pathway by interaction with the HLA-DM molecule in B-cells. Modifies peptide exchange activity of HLA-DM.
Pfam DomainsGO Terms
Pfam Domains
C1-set
MHC II beta
GO Terms
negative regulation of antigen processing and presentation of peptide antigen via MHC class II
negative regulation of antigen processing and presentation of peptide or polysaccharide antigen via MHC class II
negative regulation of antigen processing and presentation of peptide antigen
regulation of antigen processing and presentation of peptide antigen via MHC class II
regulation of antigen processing and presentation of peptide or polysaccharide antigen via MHC class II
regulation of antigen processing and presentation of peptide antigen
negative regulation of antigen processing and presentation
MHC class II receptor activity
MHC class II protein complex binding
MHC class II protein complex
regulation of antigen processing and presentation
antigen processing and presentation of exogenous peptide antigen via MHC class II
antigen processing and presentation of peptide or polysaccharide antigen via MHC class II
antigen processing and presentation of peptide antigen via MHC class II
antigen processing and presentation of exogenous peptide antigen
antigen processing and presentation of exogenous antigen
antigen processing and presentation of peptide antigen
endosome membrane
antigen processing and presentation
lysosome
lysosomal membrane
negative regulation of immune system process
adaptive immune response
regulation of immune system process
immune response
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)