3fhj | pdb_00003fhj

Independent saturation of three TrpRS subsites generates a partially-assembled state similar to those observed in molecular simulations

spinqualitylabelsall models 3fhj, resolution 2.65Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3fhj is a 6 chain structure with sequence from Geobacillus stearothermophilus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: AMP, PO4, TRP Related: 1d2r, 1mb2, 2ov4, 3fi0 Gene: trpS (Geobacillus stearothermophilus) Activity: Tryptophan--tRNA ligase, with EC number 6.1.1.2 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 Two new crystal structures of Bacillus stearothermophilus tryptophanyl-tRNA synthetase (TrpRS) afford evidence that a closed interdomain hinge angle requires a covalent bond between AMP and an occupant of either pyrophosphate or tryptophan subsite. They also are within experimental error of a cluster of structures observed in a nonequilibrium molecular dynamics simulation showing partial active-site assembly. Further, the highest energy structure in a minimum action pathway computed by using elastic network models for Open and Pretransition state (PreTS) conformations for the fully liganded TrpRS monomer is intermediate between that simulated structure and a partially disassembled structure from a nonequilibrium molecular dynamics trajectory for the unliganded PreTS. These mutual consistencies provide unexpected validation of inferences drawn from molecular simulations. Independent saturation of three TrpRS subsites generates a partially assembled state similar to those observed in molecular simulations.,Laowanapiban P, Kapustina M, Vonrhein C, Delarue M, Koehl P, Carter CW Jr Proc Natl Acad Sci U S A. 2009 Feb 10;106(6):1790-5. Epub 2009 Jan 27. PMID:19174517 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Aminoacyl tRNA Synthetase

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