1q0b

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[[Image:1q0b.gif|left|200px]]
[[Image:1q0b.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1q0b |SIZE=350|CAPTION= <scene name='initialview01'>1q0b</scene>, resolution 1.9&Aring;
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The line below this paragraph, containing "STRUCTURE_1q0b", creates the "Structure Box" on the page.
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|SITE=
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|LIGAND= <scene name='pdbligand=ADP:ADENOSINE-5&#39;-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NAT:ETHYL+4-(3-HYDROXYPHENYL)-6-METHYL-2-THIOXO-1,2,3,4-TETRAHYDROPYRIMIDINE-5-CARBOXYLATE'>NAT</scene>
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|GENE= KIF11 OR KNSL1 OR EG5 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
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|DOMAIN=
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{{STRUCTURE_1q0b| PDB=1q0b | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1q0b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q0b OCA], [http://www.ebi.ac.uk/pdbsum/1q0b PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1q0b RCSB]</span>
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'''Crystal structure of the motor protein KSP in complex with ADP and monastrol'''
'''Crystal structure of the motor protein KSP in complex with ADP and monastrol'''
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[[Category: Xu, B.]]
[[Category: Xu, B.]]
[[Category: Yan, Y.]]
[[Category: Yan, Y.]]
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[[Category: cell cycle]]
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[[Category: Cell cycle]]
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[[Category: monastrol]]
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[[Category: Monastrol]]
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[[Category: motor protein]]
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[[Category: Motor protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:42:42 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:07:05 2008''
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Revision as of 02:42, 3 May 2008

Image:1q0b.gif

Template:STRUCTURE 1q0b

Crystal structure of the motor protein KSP in complex with ADP and monastrol


Overview

We report here the first inhibitor-bound structure of a mitotic motor protein. The 1.9 A resolution structure of the motor domain of KSP, bound with the small molecule monastrol and Mg2+ x ADP, reveals that monastrol confers inhibition by "induced-fitting" onto the protein some 12 A away from the catalytic center of the enzyme, resulting in the creation of a previously non-existing binding pocket. The structure provides new insights into the biochemical and mechanical mechanisms of the mitotic motor domain. Inhibition of KSP provides a novel mechanism to arrest mitotic spindle formation, a target of several approved and investigative anti-cancer agents. The structural information gleaned from this novel pocket offers a new angle for the design of anti-mitotic agents.

About this Structure

1Q0B is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Inhibition of a mitotic motor protein: where, how, and conformational consequences., Yan Y, Sardana V, Xu B, Homnick C, Halczenko W, Buser CA, Schaber M, Hartman GD, Huber HE, Kuo LC, J Mol Biol. 2004 Jan 9;335(2):547-54. PMID:14672662 Page seeded by OCA on Sat May 3 05:42:42 2008

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