Mitogen-activated protein kinase

From Proteopedia

Jump to: navigation, search

Contents

Function

Mitogen-activated protein kinase (MAPK) also known as Extracellular Signal-Regulated Kinase (ERK) are serine/threonine kinases which regulate various cellular activities in response to extracellular stimuli by mitogens, heat shock and more. MAPK is part of the MAPK cascade which consists of MAPK, MAP2K and MAP3K which are activated by phosphorylation[1].

See also Mitogen-activated protein kinase cascade.

  • MAPK1 or ERK2 and MAPK3 are activated in response to growth factors. For MAPK1 representations see Michael Roberts/BIOL115/ERK2.
  • MAPK6 is activated by phorbol esters.
  • MAPK7 is activated by stress stimuli.
  • MAPK8 (called also c-Jun N-terminal kinase 1 or JNK1), MAPK9, MAPK10 (called also c-Jun N-terminal kinase 3 or JNK3), MAPK11, MAPK12, MAPK13, MAPK14 are stress-activated.
  • MAPK11 (also called p38-β MAPK), MAPK12 (also called p38-γ MAPK), MAPK13 (also called p38-δ MAPK), MAPK14 (also called p38-α MAPK) belongs to the class called p38 MAPK (UMass Chem 423 Student Projects 2011-2).

Relevance

MAPK cascade is elevated in cancer cells, hence MAPK inhibitors are tested as potential cancer therapy.

Disease

MAPK14 is associated with acquired hyperkeratosis and prostate transitional cell carcinoma.

Structural highlights

Inhibitors of MAPK bind in its ATP-binding site[2]. Water molecule are shown as red sphere.

3D Structures of Mitogen-activated protein kinase

Mitogen-activated protein kinase 3D structures


Human MAPK1 complex with inhibitor and sulfate (PDB entry 2ojg)

Drag the structure with the mouse to rotate

References

  1. Robinson MJ, Cobb MH. Mitogen-activated protein kinase pathways. Curr Opin Cell Biol. 1997 Apr;9(2):180-6. PMID:9069255
  2. Aronov AM, Baker C, Bemis GW, Cao J, Chen G, Ford PJ, Germann UA, Green J, Hale MR, Jacobs M, Janetka JW, Maltais F, Martinez-Botella G, Namchuk MN, Straub J, Tang Q, Xie X. Flipped out: structure-guided design of selective pyrazolylpyrrole ERK inhibitors. J Med Chem. 2007 Mar 22;50(6):1280-7. Epub 2007 Feb 15. PMID:17300186 doi:http://dx.doi.org/10.1021/jm061381f

Proteopedia Page Contributors and Editors (what is this?)

Michal Harel, Alexander Berchansky, Joel L. Sussman

Personal tools