1N2S
CRYSTAL STRUCTURE OF DTDP-6-DEOXY-L-LYXO-4-HEXULOSE REDUCTASE (RMLD) IN COMPLEX WITH NADH
Replaces: 1KC0Summary for 1N2S
Entry DOI | 10.2210/pdb1n2s/pdb |
Related | 1KBZ 1KC1 1KC3 |
Descriptor | dTDP-glucose oxidoreductase, MAGNESIUM ION, 1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE, ... (5 entities in total) |
Functional Keywords | rossman-fold, sugar-nucleotide-binding domain, oxidoreductase |
Biological source | Salmonella enterica subsp. enterica serovar Typhimurium |
Total number of polymer chains | 1 |
Total formula weight | 33401.83 |
Authors | Blankenfeldt, W.,Kerr, I.D.,Giraud, M.F.,Mcmiken, H.J.,Leonard, G.A.,Whitfield, C.,Messner, P.,Graninger, M.,Naismith, J.H. (deposition date: 2002-10-24, release date: 2002-11-01, Last modification date: 2024-02-14) |
Primary citation | Blankenfeldt, W.,Kerr, I.D.,Giraud, M.F.,McMiken, H.J.,Leonard, G.A.,Whitfield, C.,Messner, P.,Graninger, M.,Naismith, J.H. Variation on a Theme of SDR. dTDP-6-Deoxy-L- lyxo-4-Hexulose Reductase (RmlD) Shows a New Mg(2+)-Dependent Dimerization Mode Structure, 10:773-786, 2002 Cited by PubMed Abstract: dTDP-6-deoxy-L-lyxo-4-hexulose reductase (RmlD) catalyzes the final step in the conversion of dTDP-D-glucose to dTDP-L-rhamnose in an NAD(P)H- and Mg2+-dependent reaction. L-rhamnose biosynthesis is an antibacterial target. The structure of RmlD from Salmonella enterica serovar Typhimurium has been determined, and complexes with NADH, NADPH, and dTDP-L-rhamnose are reported. RmlD differs from other short chain dehydrogenases in that it has a novel dimer interface that contains Mg2+. Enzyme catalysis involves hydride transfer from the nicotinamide ring of the cofactor to the C4'-carbonyl group of the substrate. The substrate is activated through protonation by a conserved tyrosine. NAD(P)H is bound in a solvent-exposed cleft, allowing facile replacement. We suggest a novel role for the conserved serine/threonine residue of the catalytic triad of SDR enzymes. PubMed: 12057193DOI: 10.1016/S0969-2126(02)00770-0 PDB entries with the same primary citation |
Experimental method | X-RAY DIFFRACTION (2 Å) |
Structure validation
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