|
|
| (One intermediate revision not shown.) |
| Line 1: |
Line 1: |
| | | | |
| | ==Crystal Structure of apo Glyceraldehyde-3-phosphate dehydrogenase 1 (GAPDH1) from methicllin resistant Staphylococcus aureus (MRSA252)== | | ==Crystal Structure of apo Glyceraldehyde-3-phosphate dehydrogenase 1 (GAPDH1) from methicllin resistant Staphylococcus aureus (MRSA252)== |
| - | <StructureSection load='3lc7' size='340' side='right' caption='[[3lc7]], [[Resolution|resolution]] 2.50Å' scene=''> | + | <StructureSection load='3lc7' size='340' side='right'caption='[[3lc7]], [[Resolution|resolution]] 2.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3lc7]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Staar Staar]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3LC7 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3LC7 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3lc7]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus_subsp._aureus_MRSA252 Staphylococcus aureus subsp. aureus MRSA252]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3LC7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3LC7 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</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]] 2.5Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">gap, gap1, gapA, gapA1, SAR0828 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=282458 STAAR])</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glyceraldehyde-3-phosphate_dehydrogenase_(phosphorylating) Glyceraldehyde-3-phosphate dehydrogenase (phosphorylating)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.2.1.12 1.2.1.12] </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=3lc7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lc7 OCA], [https://pdbe.org/3lc7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3lc7 RCSB], [https://www.ebi.ac.uk/pdbsum/3lc7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3lc7 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=3lc7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lc7 OCA], [http://pdbe.org/3lc7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3lc7 RCSB], [http://www.ebi.ac.uk/pdbsum/3lc7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3lc7 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/G3P1_STAAR G3P1_STAAR] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lc/3lc7_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lc/3lc7_consurf.spt"</scriptWhenChecked> |
| | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
| Line 30: |
Line 31: |
| | | | |
| | ==See Also== | | ==See Also== |
| - | *[[Aldehyde dehydrogenase|Aldehyde dehydrogenase]] | + | *[[Aldehyde dehydrogenase 3D structures|Aldehyde dehydrogenase 3D structures]] |
| - | *[[Glyceraldehyde-3-Phosphate Dehydrogenase|Glyceraldehyde-3-Phosphate Dehydrogenase]] | + | *[[Glyceraldehyde-3-phosphate dehydrogenase 3D structures|Glyceraldehyde-3-phosphate dehydrogenase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Staar]] | + | [[Category: Large Structures]] |
| - | [[Category: Das, A K]] | + | [[Category: Staphylococcus aureus subsp. aureus MRSA252]] |
| - | [[Category: Dutta, D]] | + | [[Category: Das AK]] |
| - | [[Category: Mukherjee, S]] | + | [[Category: Dutta D]] |
| - | [[Category: Saha, B]] | + | [[Category: Mukherjee S]] |
| - | [[Category: Glycolysis]]
| + | [[Category: Saha B]] |
| - | [[Category: Oxidoreductase]]
| + | |
| Structural highlights
Function
G3P1_STAAR
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
The dreaded pathogen Staphylococcus aureus is one of the causes of morbidity and mortality worldwide. Glyceraldehyde-3-phosphate dehydrogenase (GAPDH), one of the key glycolytic enzymes, is irreversibly oxidized under oxidative stress and is responsible for sustenance of the pathogen inside the host. With an aim to elucidate the catalytic mechanism and identification of intermediates involved, we describe in this study different crystal structures of GAPDH1 from methicillin-resistant S. aureus MRSA252 (SaGAPDH1) in apo and holo forms of wild type, thioacyl intermediate, and ternary complexes of active-site mutants with physiological substrate d-glyceraldehyde-3-phosphate (G3P) and coenzyme NAD(+). A new phosphate recognition site, "new P(i)" site, similar to that observed in GAPDH from Thermotoga maritima, is reported here, which is 3.40 A away from the "classical P(i)" site. Ternary complexes discussed are representatives of noncovalent Michaelis complexes in the ground state. d-G3P is bound to all the four subunits of C151S.NAD and C151G.NAD in more reactive hydrate (gem-di-ol) form. However, in C151S+H178N.NAD, the substrate is bound to two chains in aldehyde form and in gem-di-ol form to the other two. This work reports binding of d-G3P to the C151G mutant in an inverted manner for the very first time. The structure of the thiaocyl complex presented here is formed after the hydride transfer. The C3 phosphate of d-G3P is positioned at the "P(s)" site in the ternary complexes but at the "new P(i)" site in the thioacyl complex and C1-O1 bond points opposite to His178 disrupting the alignment between itself and NE2 of His178. A new conformation (Conformation I) of the 209-215 loop has also been identified, where the interaction between phosphate ion at the "new P(i)" site and conserved Gly212 is lost. Altogether, inferences drawn from the kinetic analyses and crystal structures suggest the "flip-flop" model proposed for the enzyme mechanism.
Crystal structure of glyceraldehyde-3-phosphate dehydrogenase 1 from methicillin-resistant Staphylococcus aureus MRSA252 provides novel insights into substrate binding and catalytic mechanism.,Mukherjee S, Dutta D, Saha B, Das AK J Mol Biol. 2010 Sep 3;401(5):949-68. Epub 2010 Jul 8. PMID:20620151[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Mukherjee S, Dutta D, Saha B, Das AK. Crystal structure of glyceraldehyde-3-phosphate dehydrogenase 1 from methicillin-resistant Staphylococcus aureus MRSA252 provides novel insights into substrate binding and catalytic mechanism. J Mol Biol. 2010 Sep 3;401(5):949-68. Epub 2010 Jul 8. PMID:20620151 doi:10.1016/j.jmb.2010.07.002
|
