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Protein kinase C iota type is an
enzyme Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. A ...
that in humans is encoded by the ''PRKCI''
gene In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba ...
.


Function

This gene encodes a member of the protein kinase C (PKC) family of serine/threonine protein kinases. The PKC family comprises at least eight members, which are differentially expressed and are involved in a wide variety of cellular processes. This protein kinase is calcium-independent and phospholipid-dependent. It is not activated by
phorbol esters Phorbol esters are a class of chemical compounds found in a variety of plants, particularly in the families Euphorbiaceae and Thymelaeaceae. Chemically, they are ester In chemistry, an ester is a compound derived from an oxoacid (organic or in ...
or diacylglycerol. This kinase can be recruited to vesicle tubular clusters (VTCs) by direct interaction with the small GTPase RAB2, where this kinase phosphorylates glyceraldehyde-3-phosphate dehydrogenase (GAPD/GAPDH) and plays a role in microtubule dynamics in the early secretory pathway. This kinase is found to be necessary for BCL-ABL-mediated resistance to drug-induced apoptosis and therefore protects leukemia cells against drug-induced apoptosis. There is a single exon pseudogene mapped on chromosome X.


Interactions

PRKCI has been shown to
interact Advocates for Informed Choice, dba interACT or interACT Advocates for Intersex Youth, is a 501(c)(3) nonprofit organization using innovative strategies to advocate for the legal and human rights of children with intersex traits. The organizati ...
with: *
Centaurin, alpha 1 Arf-GAP with dual PH domain-containing protein 1 is a protein that in humans is encoded by the ''ADAP1'' gene. Interactions Centaurin, alpha 1 has been shown to interact with: * Casein kinase 1, alpha 1 * Nucleolin, * P110α, * PRKCI, * P ...
, *
FRS2 Fibroblast growth factor receptor substrate 2 is a protein that in humans is encoded by the ''FRS2'' gene. FRS2 is an 80 kDa membrane-anchored signal transducing adaptor protein (STAP) that links specific activated Receptor Tyrosine Kinases (RTKs) ...
, *
Glyceraldehyde 3-phosphate dehydrogenase Glyceraldehyde 3-phosphate dehydrogenase (abbreviated GAPDH) () is an enzyme of about 37kDa that catalyzes the sixth step of glycolysis and thus serves to break down glucose for energy and carbon molecules. In addition to this long establishe ...
, *
PARD3 Partitioning defective 3 homolog is a protein that in humans is encoded by the ''PARD3'' gene. Function PARD proteins, which were first identified in C. elegans, are essential for asymmetric cell division and polarized growth, whereas CDC42 (M ...
, *
Phosphoinositide-dependent kinase-1 In the field of biochemistry, PDPK1 refers to the protein 3-phosphoinositide-dependent protein kinase-1, an enzyme which is encoded by the ''PDPK1'' gene in humans. It is implicated in the development and progression of melanomas. Function P ...
, *
SMG1 (gene) Serine/threonine-protein kinase SMG1 is an enzyme that in humans is encoded by the ''SMG1'' gene. SMG1 belongs to the phosphatidylinositol 3-kinase-related kinase protein family. Function This gene encodes a protein involved in nonsense-media ...
, *
Sequestosome 1 Sequestosome-1 is a protein that in humans is encoded by the ''SQSTM1'' gene. Also known as the ubiquitin-binding protein p62, it is an autophagosome cargo protein that targets other proteins that bind to it for selective autophagy. By interacti ...
, *
KRAS ''KRAS'' (Kirsten rat sarcoma virus) is a gene that provides instructions for making a protein called K-Ras, a part of the RAS/MAPK pathway. The protein relays signals from outside the cell to the cell's nucleus. These signals instruct the cell ...
. *
Vimentin Vimentin is a structural protein that in humans is encoded by the ''VIM'' gene. Its name comes from the Latin ''vimentum'' which refers to an array of flexible rods. Vimentin is a type III intermediate filament (IF) protein that is expressed ...


References


Further reading

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