1mp5 | pdb_00001mp5

Y177F VARIANT OF S. ENTERICA RmlA

spinqualitylabelsall models 1mp5, resolution 2.75Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1mp5 is a 4 chain structure with sequence from "bacillus_cholerae-suis"_smith_1894 "bacillus cholerae-suis" smith 1894. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: UPG Related: 1iim, 1iin, 1mp3, 1mp4 Activity: Glucose-1-phosphate thymidylyltransferase, with EC number 2.7.7.24 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [Q9F7G8_SALCE] Catalyzes the formation of dTDP-glucose, from dTTP and glucose 1-phosphate, as well as its pyrophosphorolysis.[RuleBase:RU003706] 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 In vitro "glycorandomization" is a chemoenzymatic approach for generating diverse libraries of glycosylated biomolecules based on natural product scaffolds. This technology makes use of engineered variants of specific enzymes affecting metabolite glycosylation, particularly nucleotidylyltransferases and glycosyltransferases. To expand the repertoire of UDP/dTDP sugars readily available for glycorandomization, we now report a structure-based engineering approach to increase the diversity of alpha-d-hexopyranosyl phosphates accepted by Salmonella enterica LT2 alpha-d-glucopyranosyl phosphate thymidylyltransferase (E(p)). This article highlights the design rationale, determined substrate specificity, and structural elucidation of three "designed" mutations, illustrating both the success and unexpected outcomes from this type of approach. In addition, a single amino acid substitution in the substrate-binding pocket (L89T) was found to significantly increase the set of alpha-d-hexopyranosyl phosphates accepted by E(p) to include alpha-d-allo-, alpha-d-altro-, and alpha-d-talopyranosyl phosphate. In aggregate, our results provide valuable blueprints for altering nucleotidylyltransferase specificity by design, which is the first step toward in vitro glycorandomization. Expanding pyrimidine diphosphosugar libraries via structure-based nucleotidylyltransferase engineering.,Barton WA, Biggins JB, Jiang J, Thorson JS, Nikolov DB Proc Natl Acad Sci U S A. 2002 Oct 15;99(21):13397-402. Epub 2002 Oct 8. PMID:12374866 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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