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1kwp

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{{STRUCTURE_1kwp| PDB=1kwp | SCENE= }}
{{STRUCTURE_1kwp| PDB=1kwp | SCENE= }}
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'''Crystal Structure of MAPKAP2'''
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===Crystal Structure of MAPKAP2===
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==Overview==
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MAPK-activated protein kinase 2 (MAPKAPK2), one of several kinases directly phosphorylated and activated by p38 MAPK, plays a central role in the inflammatory response. The activated MAPKAPK2 phosphorylates its nuclear targets CREB/ATF1, serum response factor, and E2A protein E47 and its cytoplasmic targets HSP25/27, LSP-1, 5-lipoxygenase, glycogen synthase, and tyrosine hydroxylase. The crystal structure of unphosphorylated MAPKAPK2, determined at 2.8 A resolution, includes the kinase domain and the C-terminal regulatory domain. Although the protein is inactive, the kinase domain adopts an active conformation with aspartate 366 mimicking the missing phosphorylated threonine 222 in the activation loop. The C-terminal regulatory domain forms a helix-turn-helix plus a long strand. Phosphorylation of threonine 334, which is located between the kinase domain and the C-terminal regulatory domain, may serve as a switch for MAPKAPK2 nuclear import and export. Phosphorylated MAPKAPK2 masks the nuclear localization signal at its C terminus by binding to p38. It unmasks the nuclear export signal, which is part of the second C-terminal helix packed along the surface of kinase domain C-lobe, and thereby carries p38 to the cytoplasm.
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(as it appears on PubMed at http://www.pubmed.gov), where 12171911 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12171911}}
==About this Structure==
==About this Structure==
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[[Category: Protein kinase]]
[[Category: Protein kinase]]
[[Category: Signal transduction]]
[[Category: Signal transduction]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:15:50 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 11:10:32 2008''

Revision as of 08:10, 2 July 2008

Image:1kwp.png

Template:STRUCTURE 1kwp

Crystal Structure of MAPKAP2

Template:ABSTRACT PUBMED 12171911

About this Structure

1KWP is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of mitogen-activated protein kinase-activated protein (MAPKAP) kinase 2 suggests a bifunctional switch that couples kinase activation with nuclear export., Meng W, Swenson LL, Fitzgibbon MJ, Hayakawa K, Ter Haar E, Behrens AE, Fulghum JR, Lippke JA, J Biol Chem. 2002 Oct 4;277(40):37401-5. Epub 2002 Aug 8. PMID:12171911

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