View source for 2bjv


==Crystal Structure of PspF(1-275) R168A mutant==
<StructureSection load='2bjv' size='340' side='right'caption='[[2bjv]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2bjv]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BJV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BJV FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7&#8491;</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=2bjv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bjv OCA], [https://pdbe.org/2bjv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bjv RCSB], [https://www.ebi.ac.uk/pdbsum/2bjv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bjv ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PSPF_ECOLI PSPF_ECOLI] Transcriptional activator for the phage shock protein (psp) operon (pspABCDE) and pspG gene.<ref>PMID:8606168</ref> <ref>PMID:15485810</ref> <ref>PMID:19804784</ref> 
== 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/bj/2bjv_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=2bjv ConSurf].
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== Publication Abstract from PubMed ==
Activators of bacterial sigma54-RNA polymerase holoenzyme are mechanochemical proteins that use adenosine triphosphate (ATP) hydrolysis to activate transcription. We have determined by cryogenic electron microscopy (cryo-EM) a 20 angstrom resolution structure of an activator, phage shock protein F [PspF(1-275)], which is bound to an ATP transition state analog in complex with its basal factor, sigma54. By fitting the crystal structure of PspF(1-275) at 1.75 angstroms into the EM map, we identified two loops involved in binding sigma54. Comparing enhancer-binding structures in different nucleotide states and mutational analysis led us to propose nucleotide-dependent conformational changes that free the loops for association with sigma54.

Structural insights into the activity of enhancer-binding proteins.,Rappas M, Schumacher J, Beuron F, Niwa H, Bordes P, Wigneshweraraj S, Keetch CA, Robinson CV, Buck M, Zhang X Science. 2005 Mar 25;307(5717):1972-5. PMID:15790859<ref>PMID:15790859</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Beuron F]]
[[Category: Bordes P]]
[[Category: Buck M]]
[[Category: Keetch CA]]
[[Category: Niwa H]]
[[Category: Rappas M]]
[[Category: Robinson CV]]
[[Category: Schumacher J]]
[[Category: Wigneshweraraj S]]
[[Category: Zhang X]]