1q8u
From Proteopedia
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'''The Catalytic Subunit of cAMP-dependent Protein Kinase in Complex with Rho-kinase Inhibitor H-1152P''' | '''The Catalytic Subunit of cAMP-dependent Protein Kinase in Complex with Rho-kinase Inhibitor H-1152P''' | ||
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[[Category: Huber, R.]] | [[Category: Huber, R.]] | ||
[[Category: Kinzel, V.]] | [[Category: Kinzel, V.]] | ||
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- | [[Category: | + | [[Category: Phosphotransferase/inhibitor]] |
- | [[Category: | + | [[Category: Pka]] |
- | [[Category: | + | [[Category: Rho-kinase]] |
- | [[Category: | + | [[Category: Serine/threonine-protein kinase]] |
- | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:00:40 2008'' | |
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Revision as of 03:00, 3 May 2008
The Catalytic Subunit of cAMP-dependent Protein Kinase in Complex with Rho-kinase Inhibitor H-1152P
Overview
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.
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 Page seeded by OCA on Sat May 3 06:00:40 2008
Categories: Bos taurus | Non-specific serine/threonine protein kinase | Protein complex | Bossemeyer, D. | Breitenlechner, C. | Engh, R A. | Gassel, M. | Hidaka, H. | Huber, R. | Kinzel, V. | Atp-binding | Camp | Kinase-inhibitor-complex | Phosphorylation | Phosphotransferase/inhibitor | Pka | Rho-kinase | Serine/threonine-protein kinase