3tuy

Phosphorylated Light Chain Domain of Scallop smooth Muscle Myosin

spinqualitylabelsall models 3tuy, resolution 2.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3tuy is a 6 chain structure with sequence from Placopecten magellanicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.498Å Ligands: CA, MG, SEP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q26080_PLAMG Publication Abstract from PubMed We have determined the crystal structure of a phosphorylated smooth-muscle myosin light chain domain (LCD). This reconstituted LCD is of a sea scallop catch muscle myosin with its phosphorylatable regulatory light chain (RLC SmoA). In the crystal structure, Arg(16), an arginine residue that is present in this isoform but not in vertebrate smooth-muscle RLC, stabilizes the phosphorylation site. This arginine interacts with the carbonyl group of the phosphorylation-site serine in the unphosphorylated LCD (determined previously), and with the phosphate group when the serine is phosphorylated. However, the overall conformation of the LCD is essentially unchanged upon phosphorylation. This result provides additional evidence that phosphorylation of the RLC is unlikely to act as an on-switch in regulation of scallop catch muscle myosin. Crystal structure of a phosphorylated light chain domain of scallop smooth-muscle Myosin.,Senthil Kumar VS, O'Neall-Hennessey E, Reshetnikova L, Brown JH, Robinson H, Szent-Gyorgyi AG, Cohen C Biophys J. 2011 Nov 2;101(9):2185-9. Epub 2011 Nov 1. PMID:22067157 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Myosin 3D Structures

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