View source for 5zjb


==Structure of N-acetylmannosamine-6-phosphate-2-epimerase from Vibrio cholerae==
<StructureSection load='5zjb' size='340' side='right'caption='[[5zjb]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5zjb]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_cholerae Vibrio cholerae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5ZJB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5ZJB FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.699&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MLI:MALONATE+ION'>MLI</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</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=5zjb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5zjb OCA], [https://pdbe.org/5zjb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5zjb RCSB], [https://www.ebi.ac.uk/pdbsum/5zjb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5zjb ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/NANE_VIBCH NANE_VIBCH] Converts N-acetylmannosamine-6-phosphate (ManNAc-6-P) to N-acetylglucosamine-6-phosphate (GlcNAc-6-P).[HAMAP-Rule:MF_01235]
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== Publication Abstract from PubMed ==
Sialic acids are nine-carbon sugars that are found abundantly on the cell surfaces of mammals as glycoprotein or glycolipid complexes. Several Gram-negative and Gram-positive bacteria have the ability to scavenge and catabolize sialic acids to use as a carbon source. This gives them an advantage in colonizing sialic acid-rich environments. The genes of the sialic acid catabolic pathway are generally present as the operon nanAKE. The third gene in the operon encodes the enzyme N-acetylmannosamine-6-phosphate 2-epimerase (NanE), which catalyzes the conversion of N-acetylmannosamine 6-phosphate to N-acetylglucosamine 6-phosphate, thus committing it to enter glycolysis. The NanE enzyme belongs to the isomerase class of enzymes possessing the triose phosphate isomerase (TIM) barrel fold. Here, comparative structural and functional characterizations of the NanE epimerases from two pathogenic Gram-negative bacteria, Fusobacterium nucleatum (Fn) and Vibrio cholerae (Vc), have been carried out. Structures of NanE from Vc (VcNanE) with and without ligand bound have been determined to 1.7 and 2.7 A resolution, respectively. The structure of NanE from Fn (FnNanE) has been determined to 2.2 A resolution. The enzymes show kinetic parameters that are consistent with those of Clostridium perfringens NanE. These studies allowed an evaluation of whether NanE may be a good drug target against these pathogenic bacteria.

Crystal structures and kinetic analyses of N-acetylmannosamine-6-phosphate 2-epimerases from Fusobacterium nucleatum and Vibrio cholerae.,Manjunath L, Guntupalli SR, Currie MJ, North RA, Dobson RCJ, Nayak V, Subramanian R Acta Crystallogr F Struct Biol Commun. 2018 Jul 1;74(Pt 7):431-440. doi:, 10.1107/S2053230X18008543. Epub 2018 Jun 28. PMID:29969107<ref>PMID:29969107</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5zjb" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Vibrio cholerae]]
[[Category: Guntupalli S]]
[[Category: Manjunath L]]