4mey

From Proteopedia

(Difference between revisions)

Revision as of 23:20, 5 August 2016

Crystal structure of Escherichia coli RNA polymerase holoenzyme

Structural highlights

4mey is a 12 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	4mex
Activity:	DNA-directed RNA polymerase, with EC number 2.7.7.6
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RPOZ_ECOLI] Promotes RNA polymerase assembly. Latches the N- and C-terminal regions of the beta' subunit thereby facilitating its interaction with the beta and alpha subunits.[HAMAP-Rule:MF_00366] [RPOA_ECOLI] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. This subunit plays an important role in subunit assembly since its dimerization is the first step in the sequential assembly of subunits to form the holoenzyme.[HAMAP-Rule:MF_00059] [RPOC_ECOLI] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.[HAMAP-Rule:MF_01322] [RPOB_ECOLI] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.[HAMAP-Rule:MF_01321] [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.

Publication Abstract from PubMed

We report that bacterial RNA polymerase (RNAP) is the functional cellular target of the depsipeptide antibiotic salinamide A (Sal), and we report that Sal inhibits RNAP through a novel binding site and mechanism. We show that Sal inhibits RNA synthesis in cells and that mutations that confer Sal-resistance map to RNAP genes. We show that Sal interacts with the RNAP active-center 'bridge-helix cap' comprising the 'bridge-helix N-terminal hinge', 'F-loop', and 'link region'. We show that Sal inhibits nucleotide addition in transcription initiation and elongation. We present a crystal structure that defines interactions between Sal and RNAP and effects of Sal on RNAP conformation. We propose that Sal functions by binding to the RNAP bridge-helix cap and preventing conformational changes of the bridge-helix N-terminal hinge necessary for nucleotide addition. The results provide a target for antibacterial drug discovery and a reagent to probe conformation and function of the bridge-helix N-terminal hinge.DOI: http://dx.doi.org/10.7554/eLife.02451.001.

Transcription inhibition by the depsipeptide antibiotic salinamide A.,Degen D, Feng Y, Zhang Y, Ebright KY, Ebright YW, Gigliotti M, Vahedian-Movahed H, Mandal S, Talaue M, Connell N, Arnold E, Fenical W, Ebright RH Elife. 2014 Apr 30;3:e02451. doi: 10.7554/eLife.02451. PMID:24843001^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Degen D, Feng Y, Zhang Y, Ebright KY, Ebright YW, Gigliotti M, Vahedian-Movahed H, Mandal S, Talaue M, Connell N, Arnold E, Fenical W, Ebright RH. Transcription inhibition by the depsipeptide antibiotic salinamide A. Elife. 2014 Apr 30;3:e02451. doi: 10.7554/eLife.02451. PMID:24843001 doi:http://dx.doi.org/10.7554/eLife.02451

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4mey"

@@ Line 1: / Line 1: @@
 ==Crystal structure of Escherichia coli RNA polymerase holoenzyme==
 <StructureSection load='4mey' size='340' side='right' caption='[[4mey]], [[Resolution|resolution]] 3.95&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4mex|4mex]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA-directed_RNA_polymerase DNA-directed RNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.6 2.7.7.6] </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=4mey FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4mey OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4mey RCSB], [http://www.ebi.ac.uk/pdbsum/4mey 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=4mey FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4mey OCA], [http://pdbe.org/4mey PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4mey RCSB], [http://www.ebi.ac.uk/pdbsum/4mey PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4mey ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 19: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4mey" style="background-color:#fffaf0;"></div>
 ==See Also==
+*[[RNA polymerase|RNA polymerase]]
 *[[Sigma factor|Sigma factor]]
 == References ==

4mey

From Proteopedia

Revision as of 23:20, 5 August 2016

Crystal structure of Escherichia coli RNA polymerase holoenzyme

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

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