CATH Classification

Domain Context

CATH Clusters

Superfamily Transferase(Phosphotransferase) domain 1
Functional Family Dual specificity mitogen-activated protein kinase kinase 1

Enzyme Information

2.7.12.2
Mitogen-activated protein kinase kinase.
based on mapping to UniProt P29678
ATP + a protein = ADP + a phosphoprotein.
-!- A dual-specific protein kinase and requires mitogen-activated protein kinase kinase kinase (MAPKKK) for activation. -!- It is required for activation of EC 2.7.11.24. -!- Phosphorylation of MEK1 by Raf involves phosphorylation of two serine residues. -!- Mitogen-activated protein kinase (MAPK) signal transduction pathways are among the most widespread mechanisms of cellular regulation. -!- Mammalian MAPK pathways can be recruited by a wide variety of stimuli including hormones (e.g. insulin and growth hormone), mitogens (e.g. epidermal growth factor and platelet-derived growth factor), vasoactive peptides (e.g. angiotensin-II and endothelin), inflammatory cytokines of the tumor necrosis factor (TNF) family and environmental stresses such as osmotic shock, ionizing radiation and ischemeic injury.

UniProtKB Entries (2)

P29678
MP2K1_RABIT
Oryctolagus cuniculus
Dual specificity mitogen-activated protein kinase kinase 1
Q6VAB6
KSR2_HUMAN
Homo sapiens
Kinase suppressor of Ras 2

PDB Structure

PDB 5KKR
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Small molecule stabilization of the KSR inactive state antagonizes oncogenic Ras signalling.
Dhawan, N.S., Scopton, A.P., Dar, A.C.
Nature
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