======= HLA-DRB1 =======
== Gene Information ==
* **Official Symbol**: HLA-DRB1
* **Official Name**: major histocompatibility complex, class II, DR beta 1
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=3123|3123]]
* **UniProt**: [[https://www.uniprot.org/uniprot/P01911|P01911]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=HLA-DRB1&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20HLA-DRB1|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/142857|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: HLA-DRB1 belongs to the HLA class II beta chain paralogs. The class II molecule is a heterodimer consisting of an alpha (DRA) and a beta chain (DRB), 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 beta chain is approximately 26-28 kDa. It is encoded by 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. Within the DR molecule the beta chain contains all the polymorphisms specifying the peptide binding specificities. Hundreds of DRB1 alleles have been described and typing for these polymorphisms is routinely done for bone marrow and kidney transplantation. DRB1 is expressed at a level five times higher than its paralogs DRB3, DRB4 and DRB5. DRB1 is present in all individuals. Allelic variants of DRB1 are linked with either none or one of the genes DRB3, DRB4 and DRB5. There are 4 related pseudogenes: DRB2, DRB6, DRB7, DRB8 and DRB9. [provided by RefSeq, Jul 2008].
* **UniProt Summary**: N/A
|C1-set|
|MHC II beta|
|MHC class II protein complex|
|MHC class II protein complex binding|
|polysaccharide binding|
|integral component of lumenal side of endoplasmic reticulum membrane|
|clathrin-coated endocytic vesicle membrane|
|peptide antigen binding|
|transport vesicle membrane|
|ER to Golgi transport vesicle membrane|
|endocytic vesicle membrane|
|interferon-gamma-mediated signaling pathway|
|trans-Golgi network membrane|
|antigen processing and presentation of exogenous peptide antigen via MHC class II|
|antigen processing and presentation of peptide antigen via MHC class II|
|antigen processing and presentation of peptide or polysaccharide antigen via MHC class II|
|late endosome membrane|
|cellular response to interferon-gamma|
|T cell receptor signaling pathway|
|antigen processing and presentation of exogenous peptide antigen|
|response to interferon-gamma|
|antigen processing and presentation of exogenous antigen|
|antigen processing and presentation of peptide antigen|
|antigen processing and presentation|
|antigen receptor-mediated signaling pathway|
|lysosomal membrane|
|immune response-activating cell surface receptor signaling pathway|
|immune response-regulating cell surface receptor signaling pathway|
|immune response-activating signal transduction|
|immune response-regulating signaling pathway|
|adaptive immune response|
|cell surface|
|Golgi membrane|
|activation of immune response|
|cytokine-mediated signaling pathway|
|innate immune response|
|positive regulation of immune response|
|defense response to other organism|
|cellular response to cytokine stimulus|
|response to cytokine|
|regulation of immune response|
|positive regulation of immune system process|
|response to other organism|
|response to external biotic stimulus|
|response to biotic stimulus|
|defense response|
|regulation of immune system process|
|immune response|
|membrane|
\\
=== CRISPR Data ===
No hits were found.
No correlation found to any other genes in chemogenomics.
Global Fraction of Cell Lines Where Essential: 0/739
^Tissue^Fraction Of Cell Lines Where Essential^
|1290807.0|0/1|
|909776.0|0/1|
|bile duct|0/28|
|blood|0/28|
|bone|0/26|
|breast|0/33|
|central nervous system|0/56|
|cervix|0/4|
|colorectal|0/17|
|esophagus|0/13|
|fibroblast|0/1|
|gastric|0/16|
|kidney|0/21|
|liver|0/20|
|lung|0/75|
|lymphocyte|0/16|
|ovary|0/26|
|pancreas|0/24|
|peripheral nervous system|0/16|
|plasma cell|0/15|
|prostate|0/1|
|skin|0/24|
|soft tissue|0/9|
|thyroid|0/2|
|upper aerodigestive|0/22|
|urinary tract|0/29|
|uterus|0/5|
== Essentiality in NALM6 ==
* **Essentiality Rank**: 11158
* **Expression level (log2 read counts)**: 8.01
{{:chemogenomics:nalm6 dist.png?nolink |}}