CATH Classification

Domain Context

CATH Clusters

Superfamily Transferase(Phosphotransferase) domain 1
Functional Family

Enzyme Information

2.7.12.2
Mitogen-activated protein kinase kinase.
based on mapping to UniProt Q02750
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 (1)

Q02750
MP2K1_HUMAN
Homo sapiens
Dual specificity mitogen-activated protein kinase kinase 1

PDB Structure

PDB 3VVH
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
X-ray structure of the human mitogen-activated protein kinase kinase 1 (MEK1) in complex with an inhibitor and MgATP
Kudo, N., Kato, R., Wakatsuki, S.
To be Published
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