1zot: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
==crystal structure analysis of the CyaA/C-Cam with PMEAPP== | ==crystal structure analysis of the CyaA/C-Cam with PMEAPP== | ||
<StructureSection load='1zot' size='340' side='right' caption='[[1zot]], [[Resolution|resolution]] 2.20Å' scene=''> | <StructureSection load='1zot' size='340' side='right' caption='[[1zot]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
| Line 5: | Line 6: | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EMA:(ADENIN-9-YL-ETHOXYMETHYL)-HYDROXYPHOSPHINYL-DIPHOSPHATE'>EMA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EMA:(ADENIN-9-YL-ETHOXYMETHYL)-HYDROXYPHOSPHINYL-DIPHOSPHATE'>EMA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Adenylate_cyclase Adenylate cyclase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.6.1.1 4.6.1.1] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Adenylate_cyclase Adenylate cyclase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.6.1.1 4.6.1.1] </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=1zot FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zot OCA], [http://pdbe.org/1zot PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1zot RCSB], [http://www.ebi.ac.uk/pdbsum/1zot PDBsum]</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=1zot FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zot OCA], [http://pdbe.org/1zot PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1zot RCSB], [http://www.ebi.ac.uk/pdbsum/1zot PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1zot ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
| Line 13: | Line 14: | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zo/1zot_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zo/1zot_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 28: | Line 29: | ||
</div> | </div> | ||
<div class="pdbe-citations 1zot" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 1zot" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
| Line 41: | Line 39: | ||
[[Category: Tang, W J]] | [[Category: Tang, W J]] | ||
[[Category: Adenylyl cyclase toxin]] | [[Category: Adenylyl cyclase toxin]] | ||
[[Category: Atp]] | |||
[[Category: Calmodulin-binding]] | [[Category: Calmodulin-binding]] | ||
[[Category: Cyaa]] | [[Category: Cyaa]] | ||
[[Category: Lyase]] | [[Category: Lyase]] | ||
[[Category: Pmeapp]] | [[Category: Pmeapp]] | ||
Revision as of 12:15, 2 May 2018
crystal structure analysis of the CyaA/C-Cam with PMEAPPcrystal structure analysis of the CyaA/C-Cam with PMEAPP
Structural highlights
Function[CYAA_BORPE] This adenylate cyclase belongs to a special class of bacterial toxin. It causes whooping cough by acting on mammalian cells by elevating cAMP-concentration and thus disrupts normal cell function. 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 PubMedCyaA is crucial for colonization by Bordetella pertussis, the etiologic agent of whooping cough. Here we report crystal structures of the adenylyl cyclase domain (ACD) of CyaA with the C-terminal domain of calmodulin. Four discrete regions of CyaA bind calcium-loaded calmodulin with a large buried contact surface. Of those, a tryptophan residue (W242) at an alpha-helix of CyaA makes extensive contacts with the calcium-induced, hydrophobic pocket of calmodulin. Mutagenic analyses show that all four regions of CyaA contribute to calmodulin binding and the calmodulin-induced conformational change of CyaA is crucial for catalytic activation. A crystal structure of CyaA-calmodulin with adefovir diphosphate, the metabolite of an approved antiviral drug, reveals the location of catalytic site of CyaA and how adefovir diphosphate tightly binds CyaA. The ACD of CyaA shares a similar structure and mechanism of activation with anthrax edema factor (EF). However, the interactions of CyaA with calmodulin completely diverge from those of EF. This provides molecular details of how two structurally homologous bacterial toxins evolved divergently to bind calmodulin, an evolutionarily conserved calcium sensor. Structural basis for the interaction of Bordetella pertussis adenylyl cyclase toxin with calmodulin.,Guo Q, Shen Y, Lee YS, Gibbs CS, Mrksich M, Tang WJ EMBO J. 2005 Sep 21;24(18):3190-201. Epub 2005 Sep 1. PMID:16138079[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
| ||||||||||||||||||