1q8u

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{{STRUCTURE_1q8u| PDB=1q8u | SCENE= }}
{{STRUCTURE_1q8u| PDB=1q8u | SCENE= }}
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'''The Catalytic Subunit of cAMP-dependent Protein Kinase in Complex with Rho-kinase Inhibitor H-1152P'''
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===The Catalytic Subunit of cAMP-dependent Protein Kinase in Complex with Rho-kinase Inhibitor H-1152P===
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==Overview==
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Protein kinases require strict inactivation to prevent spurious cellular signaling; overactivity can cause cancer or other diseases and necessitates selective inhibition for therapy. Rho-kinase is involved in such processes as tumor invasion, cell adhesion, smooth muscle contraction, and formation of focal adhesion fibers, as revealed using inhibitor Y-27632. Another Rho-kinase inhibitor, HA-1077 or Fasudil, is currently used in the treatment of cerebral vasospasm; the related nanomolar inhibitor H-1152P improves on its selectivity and potency. We have determined the crystal structures of HA-1077, H-1152P, and Y-27632 in complexes with protein kinase A (PKA) as a surrogate kinase to analyze Rho-kinase inhibitor binding properties. Features conserved between PKA and Rho-kinase are involved in the key binding interactions, while a combination of residues at the ATP binding pocket that are unique to Rho-kinase may explain the inhibitors' Rho-kinase selectivity. Further, a second H-1152P binding site potentially points toward PKA regulatory domain interaction modulators.
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(as it appears on PubMed at http://www.pubmed.gov), where 14656443 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14656443}}
==About this Structure==
==About this Structure==
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[[Category: Rho-kinase]]
[[Category: Rho-kinase]]
[[Category: Serine/threonine-protein kinase]]
[[Category: Serine/threonine-protein kinase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:00:40 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 19:04:39 2008''

Revision as of 16:04, 28 July 2008

Image:1q8u.png

Template:STRUCTURE 1q8u

The Catalytic Subunit of cAMP-dependent Protein Kinase in Complex with Rho-kinase Inhibitor H-1152P

Template:ABSTRACT PUBMED 14656443

About this Structure

1Q8U is a Protein complex structure of sequences from Bos taurus. Full crystallographic information is available from OCA.

Reference

Protein kinase A in complex with Rho-kinase inhibitors Y-27632, Fasudil, and H-1152P: structural basis of selectivity., Breitenlechner C, Gassel M, Hidaka H, Kinzel V, Huber R, Engh RA, Bossemeyer D, Structure. 2003 Dec;11(12):1595-607. PMID:14656443

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