Search results
Results from the WOW.Com Content Network
They regulate cell functions including proliferation, gene expression, differentiation, mitosis, cell survival, and apoptosis. [1] MAP kinases are found in eukaryotes only, but they are fairly diverse and encountered in all animals, fungi and plants, and even in an array of unicellular eukaryotes. [citation needed]
Mitogen Activated Protein (MAP) kinase kinase kinase (MAPKKK, [1] MKKK, [2] M3K, [3] or, MAP3K [4]) is a serine/threonine-specific protein kinase which acts upon MAP kinase kinase. Subsequently, MAP kinase kinase activates MAP kinase. Several types of MAPKKK can exist but are mainly characterized by the MAP kinases they activate.
The activators of p38 (MKK3 and MKK6), JNK (MKK4 and MKK7), and ERK (MEK1 and MEK2) define independent MAP kinase signal transduction pathways. [1] The acronym MEK derives from M APK/ E RK K inase. [ 2 ]
This biochemistry article is a stub. You can help Wikipedia by expanding it.
The Extracellular Signal-Regulated Kinases; MAP Kinase Resource Archived 2021-04-15 at the Wayback Machine. Extracellular+Signal-Regulated+MAP+Kinases at the U.S. National Library of Medicine Medical Subject Headings (MeSH) MAPK1; MAPK3 Info with links in the Cell Migration Gateway Archived 2014-12-11 at the Wayback Machine
One of the first proteins known to be phosphorylated by ERK was a microtubule-associated protein (MAP). As discussed below, many additional targets for phosphorylation by MAPK were later found, and the protein was renamed "mitogen-activated protein kinase" (MAPK). The series of kinases from RAF to MEK to MAPK is an example of a protein kinase ...
Phosphorylation of the MAP by the MARK causes the MAP to detach from any bound microtubules. This detachment is usually associated with a destabilization of the microtubule causing it to fall apart. In this way the stabilization of microtubules by MAPs is regulated within the cell through phosphorylation.
There are also MKPs that belong to a group called Atypical MKPs. For example, Vaccina H1-related (VHR) is an atypical MKP because it only has the DUSP region. [28] VHR is only found in lymphoid and hematopoietic cells, and it inactivates the ERK1/2 and JNKs in T-cell receptors. [29] VHR also induces cell cycle arrest. [30] [31]