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| | ==GlmU in complex with a Quinazoline Compound== | | ==GlmU in complex with a Quinazoline Compound== |
| - | <StructureSection load='4e1k' size='340' side='right' caption='[[4e1k]], [[Resolution|resolution]] 2.00Å' scene=''> | + | <StructureSection load='4e1k' size='340' side='right'caption='[[4e1k]], [[Resolution|resolution]] 2.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4e1k]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Haein Haein]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4E1K OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4E1K FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4e1k]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Haemophilus_influenzae_Rd_KW20 Haemophilus influenzae Rd KW20]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4E1K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4E1K FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=0N5:N-{4-[(7-HYDROXY-6-METHOXYQUINAZOLIN-4-YL)AMINO]PHENYL}BENZAMIDE'>0N5</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0N5:N-{4-[(7-HYDROXY-6-METHOXYQUINAZOLIN-4-YL)AMINO]PHENYL}BENZAMIDE'>0N5</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">glmU, HI_0642 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=71421 HAEIN])</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=4e1k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4e1k OCA], [https://pdbe.org/4e1k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4e1k RCSB], [https://www.ebi.ac.uk/pdbsum/4e1k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4e1k ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4e1k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4e1k OCA], [http://pdbe.org/4e1k PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4e1k RCSB], [http://www.ebi.ac.uk/pdbsum/4e1k PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4e1k ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/GLMU_HAEIN GLMU_HAEIN]] 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.<ref>PMID:18029420</ref> | + | [[https://www.uniprot.org/uniprot/GLMU_HAEIN GLMU_HAEIN]] 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.<ref>PMID:18029420</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4e1k" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4e1k" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[N-acetylglucosamine-1-phosphate uridyltransferase|N-acetylglucosamine-1-phosphate uridyltransferase]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Haein]] | + | [[Category: Haemophilus influenzae Rd KW20]] |
| - | [[Category: Doig, P]] | + | [[Category: Large Structures]] |
| - | [[Category: Larsen, N A]] | + | [[Category: Doig P]] |
| - | [[Category: Acyltransferase]] | + | [[Category: Larsen NA]] |
| - | [[Category: Cell shape]]
| + | |
| - | [[Category: Cell wall biogenesis/degradation]]
| + | |
| - | [[Category: Metal-binding]]
| + | |
| - | [[Category: Multifunctional enzyme]]
| + | |
| - | [[Category: Nucleotidyl transferase]]
| + | |
| - | [[Category: Peptidoglycan synthesis]]
| + | |
| - | [[Category: Transferase-transferase inhibitor complex]]
| + | |
| - | [[Category: Uridyltransferase]]
| + | |
| Structural highlights
Function
[GLMU_HAEIN] 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]
Publication Abstract from PubMed
GlmU is a bifunctional enzyme with acetyltransferase and uridyltransferase activities, and is essential for the biosynthesis of the bacterial cell wall. Inhibition results in a loss of cell viability. GlmU is therefore considered a potential target for novel antibacterial agents. A HTS (high-throughput screen) identified a series of aminoquinazolines with submicromolar potency against the uridyltransferase reaction. Biochemical and biophysical characterization showed competition with UTP binding. We determined the crystal structure of a representative aminoquinazoline bound to the Haemophilus influenzae isoenzyme at a resolution of 2.0 A. The inhibitor occupies part of the UTP site, skirts the outer perimeter of the GlcNAc1-P (N-acetylglucosamine-1-phosphate) pocket and anchors a hydrophobic moiety into a lipophilic pocket. Our SAR (structure-activity relationship) analysis shows that all of these interactions are essential for inhibitory activity in this series. The crystal structure suggests that the compound would block binding of UTP and lock GlmU in an apo-enzyme-like conformation, thus interfering with its enzymatic activity. Our lead generation effort provides ample scope for further optimization of these compounds for antibacterial drug discovery.
An aminoquinazoline inhibitor of the essential bacterial cell wall synthetic enzyme GlmU has a unique non-protein-kinase-like binding mode.,Larsen NA, Nash TJ, Morningstar M, Shapiro AB, Joubran C, Blackett CJ, Patten AD, Boriack-Sjodin PA, Doig P Biochem J. 2012 Sep 15;446(3):405-13. doi: 10.1042/BJ20120596. PMID:22721802[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Mochalkin I, Lightle S, Zhu Y, Ohren JF, Spessard C, Chirgadze NY, Banotai C, Melnick M, McDowell L. Characterization of substrate binding and catalysis in the potential antibacterial target N-acetylglucosamine-1-phosphate uridyltransferase (GlmU). Protein Sci. 2007 Dec;16(12):2657-66. PMID:18029420 doi:http://dx.doi.org/16/12/2657
- ↑ Larsen NA, Nash TJ, Morningstar M, Shapiro AB, Joubran C, Blackett CJ, Patten AD, Boriack-Sjodin PA, Doig P. An aminoquinazoline inhibitor of the essential bacterial cell wall synthetic enzyme GlmU has a unique non-protein-kinase-like binding mode. Biochem J. 2012 Sep 15;446(3):405-13. doi: 10.1042/BJ20120596. PMID:22721802 doi:10.1042/BJ20120596
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