1bg2

HUMAN UBIQUITOUS KINESIN MOTOR DOMAIN

spinqualitylabelsall models 1bg2, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1bg2 is a 1 chain structure with sequence from Homo sapiens. The April 2005 RCSB PDB Molecule of the Month feature on Kinesin by David S. Goodsell is 10.2210/rcsb_pdb/mom_2005_4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ACT, ADP, MG Resources: FirstGlance, OCA, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Kinesin is the founding member of a superfamily of microtubule based motor proteins that perform force-generating tasks such as organelle transport and chromosome segregation. It has two identical approximately 960-amino-acid chains containing an amino-terminal globular motor domain, a central alpha-helical region that enables dimer formation through a coiled-coil, and a carboxy-terminal tail domain that binds light chains and possibly an organelle receptor. The kinesin motor domain of approximately 340 amino acids, which can produce movement in vitro, is much smaller than that of myosin (approximately 850 amino acids) and dynein (1,000 amino acids), and is the smallest known molecular motor. Here, we report the crystal structure of the human kinesin motor domain with bound ADP determined to 1.8-A resolution by X-ray crystallography. The motor consists primarily of a single alpha/beta arrowhead-shaped domain with dimensions of 70 x 45 x 45 A. Unexpectedly, it has a striking structural similarity to the core of the catalytic domain of the actin-based motor myosin. Although kinesin and myosin have virtually no amino-acid sequence++ identity, and exhibit distinct enzymatic and motile properties, our results suggest that these two classes of mechanochemical enzymes evolved from a common ancestor and share a similar force-generating strategy. Crystal structure of the kinesin motor domain reveals a structural similarity to myosin.,Kull FJ, Sablin EP, Lau R, Fletterick RJ, Vale RD Nature. 1996 Apr 11;380(6574):550-5. PMID:8606779 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Kinesin

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