6omf

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==CryoEM structure of SigmaS-transcription initiation complex with activator Crl==
==CryoEM structure of SigmaS-transcription initiation complex with activator Crl==
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<StructureSection load='6omf' size='340' side='right'caption='[[6omf]], [[Resolution|resolution]] 3.26&Aring;' scene=''>
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<SX load='6omf' size='340' side='right' viewer='molstar' caption='[[6omf]], [[Resolution|resolution]] 3.26&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[6omf]] is a 9 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OMF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6OMF FirstGlance]. <br>
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<table><tr><td colspan='2'>[[6omf]] is a 9 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [https://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_Typhimurium Salmonella enterica subsp. enterica serovar Typhimurium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6OMF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6OMF FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.26&#8491;</td></tr>
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<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>
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<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>
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<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=6omf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6omf OCA], [http://pdbe.org/6omf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6omf RCSB], [http://www.ebi.ac.uk/pdbsum/6omf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6omf ProSAT]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6omf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6omf OCA], [https://pdbe.org/6omf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6omf RCSB], [https://www.ebi.ac.uk/pdbsum/6omf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6omf ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/A0A0F7J6B7_SALTM A0A0F7J6B7_SALTM]] Binds to the sigma-S subunit of RNA polymerase, activating expression of sigma-S-regulated genes. Stimulates RNA polymerase holoenzyme formation and may bind to several other sigma factors, such as sigma-70 and sigma-32.[HAMAP-Rule:MF_01178] [[http://www.uniprot.org/uniprot/RPOC_ECOLI RPOC_ECOLI]] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.[HAMAP-Rule:MF_01322] [[http://www.uniprot.org/uniprot/RPOB_ECO57 RPOB_ECO57]] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. [[http://www.uniprot.org/uniprot/RPOA_ECO57 RPOA_ECO57]] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. [[http://www.uniprot.org/uniprot/RPOZ_ECO57 RPOZ_ECO57]] 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 (By similarity). [[http://www.uniprot.org/uniprot/S5ZIY8_SALTM S5ZIY8_SALTM]] Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is the master transcriptional regulator of the stationary phase and the general stress response.[HAMAP-Rule:MF_00959]
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[https://www.uniprot.org/uniprot/RPOA_ECOLI 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]
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==See Also==
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*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
__TOC__
__TOC__
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</StructureSection>
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</SX>
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[[Category: DNA-directed RNA polymerase]]
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[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Campbell, E A]]
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[[Category: Salmonella enterica subsp. enterica serovar Typhimurium]]
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[[Category: Cartagena, A Jaramillo]]
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[[Category: Campbell EA]]
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[[Category: Darst, S A]]
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[[Category: Darst SA]]
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[[Category: Betass']]
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[[Category: Jaramillo Cartagena A]]
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[[Category: Dna/rna]]
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[[Category: Sigma]]
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[[Category: Transcription]]
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[[Category: Transcription-activator]]
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[[Category: Transferase-dna complex]]
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Current revision

CryoEM structure of SigmaS-transcription initiation complex with activator Crl

6omf, resolution 3.26Å

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