======= JPH2 =======
== Gene Information ==
* **Official Symbol**: JPH2
* **Official Name**: junctophilin 2
* **Aliases and Previous Symbols**: N/A
* **Entrez ID**: [[https://www.ncbi.nlm.nih.gov/gene/?term=57158|57158]]
* **UniProt**: [[https://www.uniprot.org/uniprot/Q9BR39|Q9BR39]]
* **Interactions**: [[https://thebiogrid.org/search.php?search=JPH2&organism=9606|BioGRID]]
* **PubMed articles**: [[https://www.ncbi.nlm.nih.gov/pubmed/?term=gene%20JPH2|Open PubMed]]
* **OMIM**: [[https://omim.org/entry/605267|Open OMIM]]
== Function Summary ==
* **Entrez Summary**: Junctional complexes between the plasma membrane and endoplasmic/sarcoplasmic reticulum are a common feature of all excitable cell types and mediate cross talk between cell surface and intracellular ion channels. The protein encoded by this gene is a component of junctional complexes and is composed of a C-terminal hydrophobic segment spanning the endoplasmic/sarcoplasmic reticulum membrane and a remaining cytoplasmic domain that shows specific affinity for the plasma membrane. This gene is a member of the junctophilin gene family. Alternative splicing has been observed at this locus and two variants encoding distinct isoforms are described. [provided by RefSeq, Jul 2008].
* **UniProt Summary**: Junctophilins contribute to the formation of junctional membrane complexes (JMCs) which link the plasma membrane with the endoplasmic or sarcoplasmic reticulum in excitable cells. Provides a structural foundation for functional cross-talk between the cell surface and intracellular calcium release channels. JPH2 is necessary for proper intracellular Ca(2+) signaling in cardiac myocytes via its involvement in ryanodine receptor-mediated calcium ion release. Contributes to the construction of skeletal muscle triad junctions. {ECO:0000269|PubMed:20095964}.
|MORN|
|junctional membrane complex|
|positive regulation of ryanodine-sensitive calcium-release channel activity|
|junctional sarcoplasmic reticulum membrane|
|calcium-release channel activity|
|phosphatidylinositol-5-phosphate binding|
|phosphatidic acid binding|
|regulation of ryanodine-sensitive calcium-release channel activity|
|phosphatidylinositol-3,5-bisphosphate binding|
|phosphatidylinositol-4-phosphate binding|
|phosphatidylinositol-3,4,5-trisphosphate binding|
|positive regulation of calcium ion transmembrane transporter activity|
|phosphatidylinositol-3-phosphate binding|
|positive regulation of release of sequestered calcium ion into cytosol|
|positive regulation of calcium-mediated signaling|
|sarcoplasmic reticulum|
|positive regulation of calcium ion transport into cytosol|
|release of sequestered calcium ion into cytosol|
|negative regulation of sequestering of calcium ion|
|phosphatidylserine binding|
|calcium ion transmembrane import into cytosol|
|positive regulation of cation channel activity|
|positive regulation of calcium ion transmembrane transport|
|calcium ion transport into cytosol|
|phosphatidylinositol-4,5-bisphosphate binding|
|regulation of release of sequestered calcium ion into cytosol|
|regulation of cardiac muscle tissue development|
|regulation of calcium ion transmembrane transporter activity|
|cytosolic calcium ion transport|
|regulation of calcium-mediated signaling|
|regulation of calcium ion transport into cytosol|
|positive regulation of ion transmembrane transporter activity|
|positive regulation of transporter activity|
|positive regulation of calcium ion transport|
|regulation of sequestering of calcium ion|
|Z disc|
|regulation of striated muscle tissue development|
|regulation of muscle tissue development|
|regulation of muscle organ development|
|positive regulation of cation transmembrane transport|
|regulation of calcium ion transmembrane transport|
|positive regulation of ion transmembrane transport|
|regulation of cation channel activity|
|calcium ion transmembrane transport|
|positive regulation of transmembrane transport|
|regulation of calcium ion transport|
|calcium ion transport|
|regulation of ion transmembrane transporter activity|
|regulation of transmembrane transporter activity|
|positive regulation of ion transport|
|regulation of transporter activity|
|positive regulation of cytosolic calcium ion concentration|
|divalent metal ion transport|
|divalent inorganic cation transport|
|regulation of cytosolic calcium ion concentration|
|regulation of cation transmembrane transport|
|regulation of metal ion transport|
|cellular calcium ion homeostasis|
|calcium ion homeostasis|
|cellular divalent inorganic cation homeostasis|
|regulation of ion transmembrane transport|
|divalent inorganic cation homeostasis|
|cellular metal ion homeostasis|
|inorganic cation transmembrane transport|
|regulation of transmembrane transport|
|cation transmembrane transport|
|metal ion homeostasis|
|cellular cation homeostasis|
|metal ion transport|
|cellular ion homeostasis|
|inorganic ion transmembrane transport|
|regulation of ion transport|
|cation homeostasis|
|inorganic ion homeostasis|
|cellular chemical homeostasis|
|ion homeostasis|
|cation transport|
|cellular homeostasis|
|regulation of cellular localization|
|endoplasmic reticulum membrane|
|ion transmembrane transport|
|positive regulation of transport|
|endoplasmic reticulum|
|positive regulation of intracellular signal transduction|
|chemical homeostasis|
|transmembrane transport|
|ion transport|
|DNA binding|
|homeostatic process|
|positive regulation of signal transduction|
|positive regulation of molecular function|
|positive regulation of cell communication|
|positive regulation of signaling|
|regulation of intracellular signal transduction|
|establishment of localization in cell|
|regulation of transport|
\\
=== 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**: 7213
* **Expression level (log2 read counts)**: -2.79
{{:chemogenomics:nalm6 dist.png?nolink |}}