1fmv

CRYSTAL STRUCTURE OF THE APO MOTOR DOMAIN OF DICTYOSTELLIUM MYOSIN II

spinqualitylabelsall models 1fmv, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1fmv is a 1 chain structure with sequence from Atcc 11735. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CL Related: 1fmw, 1mmd, 1mnd Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [MYS2_DICDI] Myosin is a protein that binds to actin and has ATPase activity that is activated by actin. 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 Myosin is the most comprehensively studied molecular motor that converts energy from the hydrolysis of MgATP into directed movement. Its motile cycle consists of a sequential series of interactions between myosin, actin, MgATP, and the products of hydrolysis, where the affinity of myosin for actin is modulated by the nature of the nucleotide bound in the active site. The first step in the contractile cycle occurs when ATP binds to actomyosin and releases myosin from the complex. We report here the structure of the motor domain of Dictyostelium discoideum myosin II both in its nucleotide-free state and complexed with MgATP. The structure with MgATP was obtained by soaking the crystals in substrate. These structures reveal that both the apo form and the MgATP complex are very similar to those previously seen with MgATPgammaS and MgAMP-PNP. Moreover, these structures are similar to that of chicken skeletal myosin subfragment-1. The crystallized protein is enzymatically active in solution, indicating that the conformation of myosin observed in chicken skeletal myosin subfragment-1 is unable to hydrolyze ATP and most likely represents the pre-hydrolysis structure for the myosin head that occurs after release from actin. X-ray structures of the apo and MgATP-bound states of Dictyostelium discoideum myosin motor domain.,Bauer CB, Holden HM, Thoden JB, Smith R, Rayment I J Biol Chem. 2000 Dec 8;275(49):38494-9. PMID:10954715 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Myosin 3D Structures

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