Enzymes
| UniProtKB help_outline | 1 proteins |
| Enzyme class help_outline |
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- Name help_outline dTDP-β-L-4-epi-vancosamine Identifier CHEBI:75957 Charge -1 Formula C17H28N3O13P2 InChIKeyhelp_outline HRODALWRJULFHW-FMVYZHRWSA-M SMILEShelp_outline C[C@@H]1O[C@@H](C[C@](C)([NH3+])[C@H]1O)OP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H](C[C@@H]1O)n1cc(C)c(=O)[nH]c1=O 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 devancoaminyl-vancomycin Identifier CHEBI:75953 Charge 0 Formula C59H62Cl2N8O22 InChIKeyhelp_outline QCHYVJAUGVHJHX-PZIRYZLHSA-N SMILEShelp_outline C[NH2+][C@H](CC(C)C)C(=O)N[C@@H]1[C@H](O)c2ccc(Oc3cc4cc(Oc5ccc(cc5Cl)[C@@H](O)[C@@H]5NC(=O)[C@H](NC(=O)[C@@H]4NC(=O)[C@H](CC(N)=O)NC1=O)c1ccc(O)c(c1)-c1c(O)cc(O)cc1[C@H](NC5=O)C([O-])=O)c3O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O)c(Cl)c2 2D coordinates Mol file for the small molecule Search links Involved in 4 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline chloroorienticin B Identifier CHEBI:75963 Charge 1 Formula C66H76Cl2N9O24 InChIKeyhelp_outline ATHQCOUEZPBNLP-JWYJDYCQSA-O SMILEShelp_outline C[NH2+][C@H](CC(C)C)C(=O)N[C@@H]1[C@H](O)c2ccc(Oc3cc4cc(Oc5ccc(cc5Cl)[C@@H](O[C@H]5C[C@](C)([NH3+])[C@@H](O)[C@H](C)O5)[C@@H]5NC(=O)[C@H](NC(=O)[C@@H]4NC(=O)[C@H](CC(N)=O)NC1=O)c1ccc(O)c(c1)-c1c(O)cc(O)cc1[C@H](NC5=O)C([O-])=O)c3O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O)c(Cl)c2 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline dTDP Identifier CHEBI:58369 Charge -3 Formula C10H13N2O11P2 InChIKeyhelp_outline UJLXYODCHAELLY-XLPZGREQSA-K SMILEShelp_outline Cc1cn([C@H]2C[C@H](O)[C@@H](COP([O-])(=O)OP([O-])([O-])=O)O2)c(=O)[nH]c1=O 2D coordinates Mol file for the small molecule Search links Involved in 32 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 9,521 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:38591 | RHEA:38592 | RHEA:38593 | RHEA:38594 | |
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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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Characterization of a regiospecific epivancosaminyl transferase GtfA and enzymatic reconstitution of the antibiotic chloroeremomycin.
Lu W., Oberthuer M., Leimkuhler C., Tao J., Kahne D., Walsh C.T.
Chloroeremomycin, a vancomycin family glycopeptide antibiotic has three sugars, one D-glucose and two L-4-epi-vancosamines, attached to the crosslinked heptapeptide backbone by three glycosyltransferases, GtfA, -B, and -C. Prior efforts have revealed that GtfB and -C in tandem build an epivancosam ... >> More
Chloroeremomycin, a vancomycin family glycopeptide antibiotic has three sugars, one D-glucose and two L-4-epi-vancosamines, attached to the crosslinked heptapeptide backbone by three glycosyltransferases, GtfA, -B, and -C. Prior efforts have revealed that GtfB and -C in tandem build an epivancosaminyl-1,2-glucosyldisaccharide chain on residue 4 of the aglycone; however, the characterization of GtfA and glycosylation sequence of chloroeremomycin have been lacking. Here, we report the expression and purification of GtfA, as well as synthesis of its sugar donor, 2'-deoxy-thymidine 5'-diphosphate (dTDP)-beta-L-4-epi-vancosamine. GtfA transfers 4-epi-vancosamine from the chemically synthesized dTDP-4-epi-vancosamine to the beta-OH-Tyr6 residue of the aglycone, preferentially after GtfB action, to generate chloroorienticin B. With the preferred kinetic order of GtfB, then GtfA, then GtfC established, we have succeeded in reconstitution of chloroeremomycin from the heptapeptide aglycone by the sequential actions of the three enzymes. << Less
Proc. Natl. Acad. Sci. U.S.A. 101:4390-4395(2004) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.
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Structure of the TDP-epi-vancosaminyltransferase GtfA from the chloroeremomycin biosynthetic pathway.
Mulichak A.M., Losey H.C., Lu W., Wawrzak Z., Walsh C.T., Garavito R.M.
During the biosynthesis of the vancomycin-class antibiotic chloroeremomycin, TDP-epi-vancosaminyltransferase GtfA catalyzes the attachment of 4-epi-vancosamine from a TDP donor to the beta-OHTyr-6 of the aglycone cosubstrate. Glycosyltransferases from this pathway are potential tools for the combi ... >> More
During the biosynthesis of the vancomycin-class antibiotic chloroeremomycin, TDP-epi-vancosaminyltransferase GtfA catalyzes the attachment of 4-epi-vancosamine from a TDP donor to the beta-OHTyr-6 of the aglycone cosubstrate. Glycosyltransferases from this pathway are potential tools for the combinatorial design of new antibiotics that are effective against vancomycin-resistant bacterial strains. These enzymes are members of the GT-B glycosyltransferase superfamily, which share a homologous bidomain topology. We present the 2.8-A crystal structures of GtfA complexes with vancomycin and the natural monoglycosylated peptide substrate, representing the first direct observation of acceptor substrate binding among closely related glycosyltransferases. The acceptor substrates bind to the N-terminal domain such that the aglycone substrate's reactive hydroxyl group hydrogen bonds to the side chains of Ser-10 and Asp-13, thus identifying these as residues of potential catalytic importance. As well as an open form of the enzyme, the crystal structures have revealed a closed form in which a TDP ligand is bound at a donor substrate site in the interdomain cleft, thereby illustrating not only binding interactions, but the conformational changes in the enzyme that accompany substrate binding. << Less
Proc. Natl. Acad. Sci. U.S.A. 100:9238-9243(2003) [PubMed] [EuropePMC]