======= PTPRB =======
== Gene Information ==
* **Official Symbol**: PTPRB
* **Official Name**: protein tyrosine phosphatase receptor type B
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=5787|5787]]
* **UniProt**: [[https://www.uniprot.org/uniprot/P23467|P23467]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=PTPRB&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20PTPRB|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/176882|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP contains an extracellular domain, a single transmembrane segment and one intracytoplasmic catalytic domain, thus belongs to receptor type PTP. The extracellular region of this PTP is composed of multiple fibronectin type_III repeats, which was shown to interact with neuronal receptor and cell adhesion molecules, such as contactin and tenascin C. This protein was also found to interact with sodium channels, and thus may regulate sodium channels by altering tyrosine phosphorylation status. The functions of the interaction partners of this protein implicate the roles of this PTP in cell adhesion, neurite growth, and neuronal differentiation. Alternate transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2011].
* **UniProt Summary**: Plays an important role in blood vessel remodeling and angiogenesis. Not necessary for the initial formation of blood vessels, but is essential for their maintenance and remodeling. Can induce dephosphorylation of TEK/TIE2, CDH5/VE-cadherin and KDR/VEGFR-2. Regulates angiopoietin-TIE2 signaling in endothelial cells. Acts as a negative regulator of TIE2, and controls TIE2 driven endothelial cell proliferation, which in turn affects blood vessel remodeling during embryonic development and determines blood vessel size during perinatal growth. Essential for the maintenance of endothelial cell contact integrity and for the adhesive function of VE-cadherin in endothelial cells and this requires the presence of plakoglobin (By similarity). {ECO:0000250, ECO:0000269|PubMed:19116766, ECO:0000269|PubMed:19136612}.
|fn3|
|Y phosphatase|
|Ricin B lectin|
|transmembrane receptor protein tyrosine phosphatase activity|
|tertiary granule membrane|
|specific granule membrane|
|peptidyl-tyrosine dephosphorylation|
|receptor complex|
|protein dephosphorylation|
|dephosphorylation|
|cadherin binding|
|angiogenesis|
|blood vessel morphogenesis|
|neutrophil degranulation|
|blood vessel development|
|neutrophil activation involved in immune response|
|neutrophil mediated immunity|
|neutrophil activation|
|granulocyte activation|
|leukocyte degranulation|
|vasculature development|
|cardiovascular system development|
|myeloid leukocyte mediated immunity|
|myeloid cell activation involved in immune response|
|myeloid leukocyte activation|
|leukocyte activation involved in immune response|
|cell activation involved in immune response|
|tube morphogenesis|
|regulated exocytosis|
|leukocyte mediated immunity|
|exocytosis|
|tube development|
|circulatory system development|
|anatomical structure formation involved in morphogenesis|
|leukocyte activation|
|secretion by cell|
|export from cell|
|cell activation|
|immune effector process|
|secretion|
|integral component of plasma membrane|
|immune response|
|vesicle-mediated transport|
\\
=== CRISPR Data ===
^Screen^Score^
|[[:results:exp261|ABT-702 5μM R06 exp261]]|1.82|
^Gene^Correlation^
|[[:human genes:h:hgc6.3|HGC6.3]]|0.516|
|[[:human genes:p:polr2j3|POLR2J3]]|0.42|
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**: 9266
* **Expression level (log2 read counts)**: 1.31
{{:chemogenomics:nalm6 dist.png?nolink |}}