4f97
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4f97]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_hygroscopicus_subsp._limoneus Streptomyces hygroscopicus subsp. limoneus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F97 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4F97 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4f97]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_hygroscopicus_subsp._limoneus Streptomyces hygroscopicus subsp. limoneus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F97 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4F97 FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=VDO:[(1R,2R,3S,4S,5S)-2,3,4-TRIHYDROXY-5-{[(1S,4R,5S,6S)-4,5,6-TRIHYDROXY-3-(HYDROXYMETHYL)CYCLOHEX-2-EN-1-YL]AMINO}CYCLOHEXYL]METHYL+DIHYDROGEN+PHOSPHATE'>VDO</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.108Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=VDO:[(1R,2R,3S,4S,5S)-2,3,4-TRIHYDROXY-5-{[(1S,4R,5S,6S)-4,5,6-TRIHYDROXY-3-(HYDROXYMETHYL)CYCLOHEX-2-EN-1-YL]AMINO}CYCLOHEXYL]METHYL+DIHYDROGEN+PHOSPHATE'>VDO</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4f97 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f97 OCA], [https://pdbe.org/4f97 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4f97 RCSB], [https://www.ebi.ac.uk/pdbsum/4f97 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4f97 ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4f97 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f97 OCA], [https://pdbe.org/4f97 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4f97 RCSB], [https://www.ebi.ac.uk/pdbsum/4f97 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4f97 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/VLDE_STRHL VLDE_STRHL] Involved in the biosynthesis of the antifungal agent validamycin A (PubMed:16725283). Catalyzes the condensation between GDP-valienol and validamine 7-phosphate via a nonglycosidic C-N bond formation to yield validoxylamine A 7'-phosphate (PubMed:21766819).<ref>PMID:16725283</ref> <ref>PMID:21766819</ref> | [https://www.uniprot.org/uniprot/VLDE_STRHL VLDE_STRHL] Involved in the biosynthesis of the antifungal agent validamycin A (PubMed:16725283). Catalyzes the condensation between GDP-valienol and validamine 7-phosphate via a nonglycosidic C-N bond formation to yield validoxylamine A 7'-phosphate (PubMed:21766819).<ref>PMID:16725283</ref> <ref>PMID:21766819</ref> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | The pseudo-glycosyltransferase VldE catalyzes non-glycosidic C-N coupling between an unsaturated cyclitol and a saturated aminocyclitol with the conservation of the stereochemical configuration of the substrates to form validoxylamine A 7'-phosphate, the biosynthetic precursor of the antibiotic validamycin A. To study the molecular basis of its mechanism, the three-dimensional structures of VldE from Streptomyces hygroscopicus subsp. limoneus was determined in apo form, in complex with GDP, in complex with GDP and validoxylamine A 7'-phosphate, and in complex with GDP and trehalose. The structure of VldE with the catalytic site in both an "open" and "closed" conformation is also described. With these structures, the preferred binding of the guanine moiety by VldE, rather than the uracil moiety as seen in OtsA could be explained. The elucidation of the VldE structure in complex with the entirety of its products provides insight into the internal return mechanism by which catalysis occurs with a net retention of the stereochemical configuration of the donated cyclitol. | ||
| - | + | ==See Also== | |
| - | + | *[[Glycosyltransferase 3D structures|Glycosyltransferase 3D structures]] | |
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== References == | == References == | ||
<references/> | <references/> | ||
Current revision
Crystal Structure of VldE, the pseudo-glycosyltransferase, in complex with GDP and validoxylamine A 7'-phosphate
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