Enzymes
| UniProtKB help_outline | 1 proteins |
| Enzyme class help_outline |
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- Name help_outline dTDP-3-amino-3,6-dideoxy-α-D-galactopyranose Identifier CHEBI:63305 Charge -1 Formula C16H26N3O14P2 SMILEShelp_outline C[C@H]1O[C@H](OP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H](C[C@@H]2O)n2cc(C)c(=O)[nH]c2=O)[C@H](O)[C@@H]([NH3+])[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline acetyl-CoA Identifier CHEBI:57288 (Beilstein: 8468140) help_outline Charge -4 Formula C23H34N7O17P3S InChIKeyhelp_outline ZSLZBFCDCINBPY-ZSJPKINUSA-J SMILEShelp_outline CC(=O)SCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 377 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline dTDP-3-acetamido-3,6-dideoxy-α-D-galactopyranose Identifier CHEBI:63676 Charge -2 Formula C18H27N3O15P2 InChIKeyhelp_outline CWQDRZJUANNJKC-HYPDDMKDSA-L SMILEShelp_outline C[C@H]1O[C@H](OP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H](C[C@@H]2O)n2cc(C)c(=O)[nH]c2=O)[C@H](O)[C@@H](NC(C)=O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CoA Identifier CHEBI:57287 (Beilstein: 11604429) help_outline Charge -4 Formula C21H32N7O16P3S InChIKeyhelp_outline RGJOEKWQDUBAIZ-IBOSZNHHSA-J SMILEShelp_outline CC(C)(COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12)[C@@H](O)C(=O)NCCC(=O)NCCS 2D coordinates Mol file for the small molecule Search links Involved in 1,555 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:32095 | RHEA:32096 | RHEA:32097 | RHEA:32098 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Biosynthesis of dTDP-3-acetamido-3,6-dideoxy-alpha-D-galactose in Aneurinibacillus thermoaerophilus L420-91T.
Pfoestl A., Hofinger A., Kosma P., Messner P.
The glycan chain of the S-layer protein of Aneurinibacillus thermoaerophilus L420-91T (DSM 10154) consists of d-rhamnose and 3-acetamido-3,6-dideoxy-d-galactose (d-Fucp3NAc). Thymidine diphosphate-activated d-Fucp3NAc serves as precursor for the assembly of structural polysaccharides in Gram-posit ... >> More
The glycan chain of the S-layer protein of Aneurinibacillus thermoaerophilus L420-91T (DSM 10154) consists of d-rhamnose and 3-acetamido-3,6-dideoxy-d-galactose (d-Fucp3NAc). Thymidine diphosphate-activated d-Fucp3NAc serves as precursor for the assembly of structural polysaccharides in Gram-positive and Gram-negative organisms. The biosynthesis of dTDP-3-acetamido-3,6-dideoxy-alpha-d-galactose (dTDP-d-Fucp3NAc) involves five enzymes. The first two steps of the reaction are catalyzed by enzymes that are part of the well studied dTDP-l-rhamnose biosynthetic pathway, namely d-glucose-1-phosphate thymidyltransferase (RmlA) and dTDP-d-glucose-4,6-dehydratase (RmlB). The enzymes catalyzing the last three synthesis reactions have not been characterized biochemically so far. These steps include an isomerase, a transaminase, and a transacetylase. We identified all five genes involved by chromosome walking in the Gram-positive organism A. thermoaerophilus L420-91T and overexpressed the three new enzymes heterologously in Escherichia coli. The activities of these enzymes were monitored by reverse phase high performance liquid chromatography, and the intermediate products formed were characterized by 1H and 13C nuclear magnetic resonance spectroscopy analysis. Alignment of the newly identified proteins with known sequences revealed that the elucidated pathway in this Gram-positive organism may also be valid in the biosynthesis of the O-antigen of lipopolysaccharides of Gram-negative organisms. The key enzyme in the biosynthesis of dTDP-d-Fucp3NAc has been identified as an isomerase, which converts the 4-keto educt into the 3-keto product, with concomitant epimerization at C-4 to produce a 6-deoxy-d-xylo configuration. This is the first report of the functional characterization of the biosynthesis of dTDP-d-Fucp3NAc and description of a novel type of isomerase capable of synthesizing dTDP-6-deoxy-d-xylohex-3-ulose from dTDP-6-deoxy-d-xylohex-4-ulose. << Less
J. Biol. Chem. 278:26410-26417(2003) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.