1w7j

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spinqualitylabelsall models 1w7j, resolution 2.Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

CRYSTAL STRUCTURE OF MYOSIN V MOTOR WITH ESSENTIAL LIGHT CHAIN + ADP-BEFX- NEAR RIGOR

Overview

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.

About this Structure

1W7J is a Protein complex structure of sequences from Gallus gallus and Homo sapiens with , and as ligands. Known structural/functional Site: . 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

Page seeded by OCA on Sun Feb 3 10:20:16 2008