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[[Image:1zot.gif|left|200px]]


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==crystal structure analysis of the CyaA/C-Cam with PMEAPP==
The line below this paragraph, containing "STRUCTURE_1zot", creates the "Structure Box" on the page.
<StructureSection load='1zot' size='340' side='right'caption='[[1zot]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1zot]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bordetella_pertussis Bordetella pertussis] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZOT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ZOT FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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>
{{STRUCTURE_1zot| PDB=1zot |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1zot FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zot OCA], [https://pdbe.org/1zot PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1zot RCSB], [https://www.ebi.ac.uk/pdbsum/1zot PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1zot ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CYAA_BORPE 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 ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <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>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1zot ConSurf].
<div style="clear:both"></div>


'''crystal structure analysis of the CyaA/C-Cam with PMEAPP'''
==See Also==
 
*[[Calmodulin 3D structures|Calmodulin 3D structures]]
 
*[[3D Adenylyl cyclase 3D structures|3D Adenylyl cyclase 3D structures]]
==Overview==
__TOC__
CyaA 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.
</StructureSection>
 
==About this Structure==
1ZOT is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Bordetella_pertussis Bordetella pertussis] and [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZOT OCA].
 
==Reference==
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:[http://www.ncbi.nlm.nih.gov/pubmed/16138079 16138079]
[[Category: Adenylate cyclase]]
[[Category: Bordetella pertussis]]
[[Category: Bordetella pertussis]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Guo, Q.]]
[[Category: Guo Q]]
[[Category: Tang, W J.]]
[[Category: Tang WJ]]
[[Category: Adenylyl cyclase toxin]]
[[Category: Atp]]
[[Category: Calmodulin-binding]]
[[Category: Cyaa]]
[[Category: Pmeapp]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 17:53:26 2008''

Latest revision as of 12:06, 14 February 2024

crystal structure analysis of the CyaA/C-Cam with PMEAPPcrystal structure analysis of the CyaA/C-Cam with PMEAPP

Structural highlights

1zot is a 2 chain structure with sequence from Bordetella pertussis and Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.2Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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.

See Also

1zot, resolution 2.20Å

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