1hv9: Difference between revisions
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==STRUCTURE OF E. COLI GLMU: ANALYSIS OF PYROPHOSPHORYLASE AND ACETYLTRANSFERASE ACTIVE SITES== | ==STRUCTURE OF E. COLI GLMU: ANALYSIS OF PYROPHOSPHORYLASE AND ACETYLTRANSFERASE ACTIVE SITES== | ||
<StructureSection load='1hv9' size='340' side='right' caption='[[1hv9]], [[Resolution|resolution]] 2.10Å' scene=''> | <StructureSection load='1hv9' size='340' side='right'caption='[[1hv9]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1hv9]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HV9 OCA]. For a <b>guided tour on the structure components</b> use [http:// | <table><tr><td colspan='2'>[[1hv9]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HV9 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1HV9 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene>, <scene name='pdbligand=COA:COENZYME+A'>COA</scene>, <scene name='pdbligand=UD1:URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE'>UD1</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene>, <scene name='pdbligand=COA:COENZYME+A'>COA</scene>, <scene name='pdbligand=UD1:URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE'>UD1</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GLMU ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GLMU ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/UDP-N-acetylglucosamine_diphosphorylase UDP-N-acetylglucosamine diphosphorylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.23 2.7.7.23] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/UDP-N-acetylglucosamine_diphosphorylase UDP-N-acetylglucosamine diphosphorylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.23 2.7.7.23] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http:// | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1hv9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hv9 OCA], [http://pdbe.org/1hv9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1hv9 RCSB], [http://www.ebi.ac.uk/pdbsum/1hv9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1hv9 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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</div> | </div> | ||
<div class="pdbe-citations 1hv9" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 1hv9" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[N-acetylglucosamine-1-phosphate uridyltransferase|N-acetylglucosamine-1-phosphate uridyltransferase]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Bacillus coli migula 1895]] | [[Category: Bacillus coli migula 1895]] | ||
[[Category: Large Structures]] | |||
[[Category: UDP-N-acetylglucosamine diphosphorylase]] | [[Category: UDP-N-acetylglucosamine diphosphorylase]] | ||
[[Category: Olsen, L R]] | [[Category: Olsen, L R]] | ||
Revision as of 13:33, 18 November 2020
STRUCTURE OF E. COLI GLMU: ANALYSIS OF PYROPHOSPHORYLASE AND ACETYLTRANSFERASE ACTIVE SITESSTRUCTURE OF E. COLI GLMU: ANALYSIS OF PYROPHOSPHORYLASE AND ACETYLTRANSFERASE ACTIVE SITES
Structural highlights
Function[GLMU_ECOLI] Catalyzes the last two sequential reactions in the de novo biosynthetic pathway for UDP-N-acetylglucosamine (UDP-GlcNAc). The C-terminal domain catalyzes the transfer of acetyl group from acetyl coenzyme A to glucosamine-1-phosphate (GlcN-1-P) to produce N-acetylglucosamine-1-phosphate (GlcNAc-1-P), which is converted into UDP-GlcNAc by the transfer of uridine 5-monophosphate (from uridine 5-triphosphate), a reaction catalyzed by the N-terminal domain.[1] [2] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedN-Acetylglucosamine-1-PO(4) uridyltransferase (GlmU) is a trimeric bifunctional enzyme that catalyzes the last two sequential reactions in the de novo biosynthetic pathway for UDP-GlcNAc. The X-ray crystal structure of Escherichia coli GlmU in complex with UDP-GlcNAc and CoA has been determined to 2.1 A resolution and reveals a two-domain architecture that is responsible for these two reactions. The C-terminal domain is responsible for the CoA-dependent acetylation of Glc-1-PO(4) to GlcNAc-1-PO(4) and displays the longest left-handed parallel beta-helix observed to date. The acetyltransferase active site defined by the binding site for CoA makes use of residues from all three subunits and is positioned beneath an open cavity large enough to accommodate the Glc-1-PO(4) acetyl acceptor. The N-terminal domain catalyzes uridyl transfer from UTP to GlcNAc-1-PO(4) to form the final products UDP-GlcNAc and pyrophosphate. This domain is composed of a central seven-stranded beta-sheet surrounded by six alpha-helices in a Rossmann fold-like topology. A Co(2+) ion binds to just one of the two independent pyrophosphorylase active sites present in the crystals studied here, each of which nonetheless binds UDP-GlcNAc. The conformational changes of the enzyme and sugar nucleotide that accompany metal binding may provide a window into the structural dynamics that accompany catalysis. Structure of the Escherichia coli GlmU pyrophosphorylase and acetyltransferase active sites.,Olsen LR, Roderick SL Biochemistry. 2001 Feb 20;40(7):1913-21. PMID:11329257[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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