CNKSR2
protein-coding gene in the species Homo sapiens
Connector enhancer of kinase suppressor of ras 2, also known as CNK homolog protein 2 (CNK2) or MAGUIN (membrane-associated guanylate kinase-interacting protein), is an enzyme that in humans is encoded by the CNKSR2 gene.
Function
CNKSR2 is a multidomain protein that functions as a scaffold protein to mediate the mitogen-activated protein kinase pathways downstream from Ras. This gene product is induced by vitamin D and inhibits apoptosis in certain cancer cells. It may also play a role in ternary complex assembly of synaptic proteins at the postsynaptic membrane and coupling of signal transduction to membrane/cytoskeletal remodeling.
Mechanism of action
It is the mammalian homolog of the Drosophila gene Cnk, which is known to bind Raf, and is implicated in ras signalling. It has been shown that CNKSR2 is also a Raf binding protein, and is assumed to function in bringing together the Ras signalling complex at the postsynaptic density.
It is known to have two isoforms, one of which binds PSD95 and S-SCAM (synaptic scaffolding molecule) through its PDZ domain, and another which does not. Both of the isoforms are, however, known to be synaptically localized, and it is understood that this is mediated by the Pleckstrin homology domain. It's synaptic localization is not known to be affected by NMDA receptor activation. Overexpression of MAGUIN's C-terminal PDZ domain is known to repress synaptic localization of PSD95.
“CNKSR2” enters the record as protein-coding gene in the species Homo sapiens. Crown Archives preserves that source wording while asking what CNKSR2, protein-coding and gene can confirm, complicate or overturn.
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