4ljz: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4ljz]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_BW2952 Escherichia coli BW2952], [https://en.wikipedia.org/wiki/Escherichia_coli_DH1 Escherichia coli DH1] and [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LJZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4LJZ FirstGlance]. <br>
<table><tr><td colspan='2'>[[4ljz]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_BW2952 Escherichia coli BW2952], [https://en.wikipedia.org/wiki/Escherichia_coli_DH1 Escherichia coli DH1] and [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LJZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4LJZ FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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]] 3.5871&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=4ljz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ljz OCA], [https://pdbe.org/4ljz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ljz RCSB], [https://www.ebi.ac.uk/pdbsum/4ljz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ljz 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=4ljz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ljz OCA], [https://pdbe.org/4ljz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ljz RCSB], [https://www.ebi.ac.uk/pdbsum/4ljz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ljz ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[https://www.uniprot.org/uniprot/RPOD_ECOLI RPOD_ECOLI] Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This is the primary sigma factor of this bacterium.
[https://www.uniprot.org/uniprot/RPOD_ECOLI RPOD_ECOLI] Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This is the primary sigma factor of this bacterium.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Bacteriophage T7 encodes an essential inhibitor of the Escherichia coli host RNA polymerase (RNAP), the product of gene 2 (Gp2). We determined a series of X-ray crystal structures of E. coli RNAP holoenzyme with or without Gp2. The results define the structure and location of the RNAP sigma70 subunit domain 1.1 inside the RNAP active site channel, where it must be displaced by the DNA upon formation of the open promoter complex. The structures and associated data, combined with previous results, allow for a complete delineation of the mechanism for Gp2 inhibition of E. coli RNAP. In the primary inhibition mechanism, Gp2 forms a protein-protein interaction with , preventing the normal egress of from the RNAP active site channel. Gp2 thus misappropriates a domain of the RNAP holoenzyme, , to inhibit the function of the enzyme.
Phage T7 Gp2 inhibition of Escherichia coli RNA polymerase involves misappropriation of sigma70 domain 1.1.,Bae B, Davis E, Brown D, Campbell EA, Wigneshweraraj S, Darst SA Proc Natl Acad Sci U S A. 2013 Nov 11. PMID:24218560<ref>PMID:24218560</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4ljz" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
*[[Sigma factor 3D structures|Sigma factor 3D structures]]
*[[Sigma factor 3D structures|Sigma factor 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>

Latest revision as of 15:20, 1 March 2024

Crystal Structure Analysis of the E.coli holoenzymeCrystal Structure Analysis of the E.coli holoenzyme

Structural highlights

4ljz is a 12 chain structure with sequence from Escherichia coli BW2952, Escherichia coli DH1 and Escherichia coli K-12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 3.5871Å
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RPOD_ECOLI Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This is the primary sigma factor of this bacterium.

See Also

4ljz, resolution 3.59Å

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