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| | <StructureSection load='2gll' size='340' side='right'caption='[[2gll]], [[Resolution|resolution]] 2.20Å' scene=''> | | <StructureSection load='2gll' size='340' side='right'caption='[[2gll]], [[Resolution|resolution]] 2.20Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2gll]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Helicobacter_pylori_(strain_ss1) Helicobacter pylori (strain ss1)]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GLL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GLL FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2gll]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Helicobacter_pylori_SS1 Helicobacter pylori SS1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GLL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2GLL FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEN:BENZAMIDINE'>BEN</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</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]] 2.2Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2glm|2glm]], [[2glp|2glp]], [[2glv|2glv]]</div></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEN:BENZAMIDINE'>BEN</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FabZ ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=102617 Helicobacter pylori (strain SS1)])</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=2gll FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gll OCA], [https://pdbe.org/2gll PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gll RCSB], [https://www.ebi.ac.uk/pdbsum/2gll PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gll 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=2gll FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2gll OCA], [https://pdbe.org/2gll PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2gll RCSB], [https://www.ebi.ac.uk/pdbsum/2gll PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2gll ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/Q5G940_HELPX Q5G940_HELPX]] Involved in unsaturated fatty acids biosynthesis. Catalyzes the dehydration of short chain beta-hydroxyacyl-ACPs and long chain saturated and unsaturated beta-hydroxyacyl-ACPs.[HAMAP-Rule:MF_00406] Involved in unsaturated fatty acids biosynthesis. Catalyzes the dehydration of short chain beta-hydroxyacyl-ACPs and long chain saturated and unsaturated beta-hydroxyacyl-ACPs (By similarity).[SAAS:SAAS00205551]
| + | [https://www.uniprot.org/uniprot/FABZ_HELPY FABZ_HELPY] Involved in unsaturated fatty acids biosynthesis. Catalyzes the dehydration of short chain beta-hydroxyacyl-ACPs and long chain saturated and unsaturated beta-hydroxyacyl-ACPs.[HAMAP-Rule:MF_00406] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| | + | [[Category: Helicobacter pylori SS1]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Jiang, H]] | + | [[Category: Jiang H]] |
| - | [[Category: Liu, W]] | + | [[Category: Liu W]] |
| - | [[Category: Shen, X]] | + | [[Category: Shen X]] |
| - | [[Category: Zhang, L]] | + | [[Category: Zhang L]] |
| - | [[Category: Fabz]]
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| - | [[Category: Lyase]]
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| Structural highlights
Function
FABZ_HELPY Involved in unsaturated fatty acids biosynthesis. Catalyzes the dehydration of short chain beta-hydroxyacyl-ACPs and long chain saturated and unsaturated beta-hydroxyacyl-ACPs.[HAMAP-Rule:MF_00406]
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 PubMed
beta-Hydroxyacyl-acyl carrier protein dehydratase (FabZ) is an important enzyme for the elongation cycles of both saturated and unsaturated fatty acids biosyntheses in the type II fatty acid biosynthesis system (FAS II) pathway. FabZ has been an essential target for the discovery of compounds effective against pathogenic microbes. In this work, to characterize the catalytic and inhibitory mechanisms of FabZ, the crystal structures of the FabZ of Helicobacter pylori (HpFabZ) and its complexes with two newly discovered inhibitors have been solved. Different from the structures of other bacterial FabZs, HpFabZ contains an extra short two-turn alpha-helix (alpha4) between alpha3 and beta3, which plays an important role in shaping the substrate-binding tunnel. Residue Tyr-100 at the entrance of the tunnel adopts either an open or closed conformation in the crystal structure. The crystal structural characterization, the binding affinity determination, and the enzymatic activity assay of the HpFabZ mutant (Y100A) confirm the importance of Tyr-100 in catalytic activity and substrate binding. Residue Phe-83 at the exit tunnel was also refined in two alternative conformations, leading the tunnel to form an L-shape and U-shape. All these data thus contributed much to understanding the catalytic mechanism of HpFabZ. In addition, the co-crystal structures of HpFabZ with its inhibitors have suggested that the enzymatic activity of HpFabZ could be inhibited either by occupying the entrance of the tunnel or plugging the tunnel to prevent the substrate from accessing the active site. Our study has provided some insights into the catalytic and inhibitory mechanisms of FabZ, thus facilitating antibacterial agent development.
Structural basis for catalytic and inhibitory mechanisms of beta-hydroxyacyl-acyl carrier protein dehydratase (FabZ).,Zhang L, Liu W, Hu T, Du L, Luo C, Chen K, Shen X, Jiang H J Biol Chem. 2008 Feb 29;283(9):5370-9. Epub 2007 Dec 19. PMID:18093984[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Zhang L, Liu W, Hu T, Du L, Luo C, Chen K, Shen X, Jiang H. Structural basis for catalytic and inhibitory mechanisms of beta-hydroxyacyl-acyl carrier protein dehydratase (FabZ). J Biol Chem. 2008 Feb 29;283(9):5370-9. Epub 2007 Dec 19. PMID:18093984 doi:10.1074/jbc.M705566200
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