1w7i: Difference between revisions

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[[Image:1w7i.gif|left|200px]]
{{Seed}}
[[Image:1w7i.png|left|200px]]


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{{STRUCTURE_1w7i|  PDB=1w7i  |  SCENE=  }}  
{{STRUCTURE_1w7i|  PDB=1w7i  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF MYOSIN V MOTOR WITHOUT NUCLEOTIDE SOAKED IN 10 MM MGADP'''
===CRYSTAL STRUCTURE OF MYOSIN V MOTOR WITHOUT NUCLEOTIDE SOAKED IN 10 MM MGADP===




==Overview==
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The molecular motor, myosin, undergoes conformational changes in order to convert chemical energy into force production. Based on kinetic and structural considerations, we assert that three crystal forms of the myosin V motor delineate the conformational changes that myosin motors undergo upon detachment from actin. First, a motor domain structure demonstrates that nucleotide-free myosin V adopts a specific state (rigor-like) that is not influenced by crystal packing. A second structure reveals an actomyosin state that favors rapid release of ADP, and differs from the rigor-like state by a P-loop rearrangement. Comparison of these structures with a third structure, a 2.0 angstroms resolution structure of the motor bound to an ATP analog, illuminates the structural features that provide communication between the actin interface and nucleotide-binding site. Paramount among these is a region we name the transducer, which is composed of the seven-stranded beta-sheet and associated loops and linkers. Reminiscent of the beta-sheet distortion of the F1-ATPase, sequential distortion of this transducer region likely controls sequential release of products from the nucleotide pocket during force generation.
The line below this paragraph, {{ABSTRACT_PUBMED_15510214}}, adds the Publication Abstract to the page
(as it appears on PubMed at http://www.pubmed.gov), where 15510214 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15510214}}


==About this Structure==
==About this Structure==
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[[Category: Myosin v]]
[[Category: Myosin v]]
[[Category: Unconventional myosin]]
[[Category: Unconventional myosin]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 13:15:55 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 08:28:55 2008''

Revision as of 05:28, 28 July 2008

File:1w7i.png

Template:STRUCTURE 1w7i

CRYSTAL STRUCTURE OF MYOSIN V MOTOR WITHOUT NUCLEOTIDE SOAKED IN 10 MM MGADP

Template:ABSTRACT PUBMED 15510214

About this Structure

1W7I is a Protein complex structure of sequences from Gallus gallus and Homo sapiens. Full crystallographic information is available from OCA.

Reference

Three myosin V structures delineate essential features of chemo-mechanical transduction., Coureux PD, Sweeney HL, Houdusse A, EMBO J. 2004 Nov 24;23(23):4527-37. Epub 2004 Oct 28. PMID:15510214

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