Mitogen-activated protein kinase 3, also known asp44MAPK andERK1,[5] is anenzyme that in humans is encoded by theMAPK3gene.[6]
The protein encoded by this gene is a member of themitogen-activated protein kinase (MAP kinase) family. MAP kinases, also known asextracellular signal-regulated kinases (ERKs), act in a signaling cascade that regulates various cellular processes such asproliferation,differentiation, andcell cycle progression in response to a variety of extracellular signals. This kinase is activated by upstream kinases, resulting in its translocation to the nucleus where itphosphorylates nuclear targets. Alternatively spliced transcript variants encoding different proteinisoforms have been described.[7]
It has been suggested that MAPK3, along with the geneIRAK1, is turned off by twomicroRNAs that were activated after theinfluenza A virus had been made to infect human lung cells.[8]
Pharmacological inhibition of ERK1/2 restoresGSK3β activity and protein synthesis levels in a model oftuberous sclerosis.[9]
MAPK3 has been shown tointeract with:
![]() | This article on agene on humanchromosome 16 is astub. You can help Wikipedia byexpanding it. |