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sugar nucleotide-binding protein
L-rhamnose is a saccharide required for the virulence of some bacteria. Its precursor, dTDP-L-rhamnose, is synthesised by four different enzymes the final one of which is RmlD. The RmlD substrate binding domain is responsible for binding a sugar nucleotide [1,2]. [1]. 12057193. Variation on a Theme of SDR. dTDP-6-Deoxy-L- lyxo-4-Hexulose. Reductase (RmlD) Shows a New Mg(2+)-Dependent Dimerization Mode.. Blankenfeldt W, Kerr ID, Giraud MF, McMiken HJ, Leonard G,. Whitfield C, Messner P, Graninger M, Naismith JH;. Structure (Camb) 2002;10:773-786.. [2]. 10802738. RmlC, the third enzyme of dTDP-L-rhamnose pathway, is a new. class of epimerase.. Giraud MF, Leonard GA, Field RA, Berlind C, Naismith JH;. Nat Struct Biol 2000;7:398-402. (from Pfam)
polysaccharide biosynthesis protein
This is a family of diverse bacterial polysaccharide biosynthesis proteins including the CapD protein (Swiss:P39853) [1], WalL protein (Swiss:O86159) mannosyl-transferase (Swiss:O05349) [2] and several putative epimerases (e.g. WbiI Swiss:O69130). [1]. 7961465. Sequence analysis and molecular characterization of genes. required for the biosynthesis of type 1 capsular polysaccharide. in Staphylococcus aureus.. Lin WS, Cunneen T, Lee CY;. J Bacteriol 1994;176:7005-7016.. [2]. 9079898. Identification of additional genes required for O-antigen. biosynthesis in Vibrio cholerae O1.. Fallarino A, Mavrangelos C, Stroeher UH, Manning PA;. J Bacteriol 1997;179:2147-2153. (from Pfam)
NAD-dependent epimerase/dehydratase family protein
This family of proteins utilise NAD as a cofactor. The proteins in this family use nucleotide-sugar substrates for a variety of chemical reactions. [1]. 9174344. Structural analysis of UDP-sugar binding to UDP-galactose. 4-epimerase from Escherichia coli.. Thoden JB, Hegeman AD, Wesenberg G, Chapeau MC, Frey PA, Holden. HM;. Biochemistry 1997;36:6294-6304. (from Pfam)
dTDP-4-dehydrorhamnose reductase family protein
dTDP-4-dehydrorhamnose reductase family protein is an extended short-chain dehydrogenase similar to bacterial dTDP-4-dehydrorhamnose reductase, dTDP-4-keto-6-deoxy-D-glucose reductase, and mammalian S-adenosylmethionine synthase 2 subunit beta; in addition to the Rossmann fold (alpha/beta folding pattern with a central beta-sheet) core region typical of all SDRs, extended SDRs have a less conserved C-terminal extension of approximately 100 amino acids
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