6nno

Xanthomonas citri Phospho-PGM in complex with glucose-1-phosphate

spinqualitylabelsall models 6nno, resolution 1.57Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6nno is a 1 chain structure with sequence from Xanthomonas citri pv. citri str. 306. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.57Å Ligands: CA, G1P, PEG, SEP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Enzymes are known to adopt various conformations at different points along their catalytic cycles. Here, we present a comprehensive analysis of 15 isomorphous, high resolution crystal structures of the enzyme phosphoglucomutase from the bacterium Xanthomonas citri. The protein was captured in distinct states critical to function, including enzyme-substrate, enzyme-product, and enzyme-intermediate complexes. Key residues in ligand recognition and regions undergoing conformational change are identified and correlated with the various steps of the catalytic reaction. In addition, we use principal component analysis to examine various subsets of these structures with two goals: (1) identifying sites of conformational heterogeneity through a comparison of room temperature and cryogenic structures of the apo-enzyme and (2) a priori clustering of the enzyme-ligand complexes into functionally related groups, showing sensitivity of this method to structural features difficult to detect by traditional methods. This study captures, in a single system, the structural basis of diverse substrate recognition, the subtle impact of covalent modification, and the role of ligand-induced conformational change in this representative enzyme of the alpha-D-phosphohexomutase superfamily. Structural and dynamical description of the enzymatic reaction of a phosphohexomutase.,Stiers KM, Graham AC, Zhu JS, Jakeman DL, Nix JC, Beamer LJ Struct Dyn. 2019 Apr 1;6(2):024703. doi: 10.1063/1.5092803. eCollection 2019 Mar. PMID:31041362 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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