6c6t
From Proteopedia
(Difference between revisions)
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| - | '''Unreleased structure''' | ||
| - | + | ==CryoEM structure of E.coli RNA polymerase elongation complex bound with RfaH== | |
| - | + | <StructureSection load='6c6t' size='340' side='right' caption='[[6c6t]], [[Resolution|resolution]] 3.50Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[6c6t]] is a 9 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6C6T OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6C6T FirstGlance]. <br> | |
| - | + | </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> | |
| - | [[Category: | + | <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=6c6t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6c6t OCA], [http://pdbe.org/6c6t PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6c6t RCSB], [http://www.ebi.ac.uk/pdbsum/6c6t PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6c6t ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [[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/RPOZ_ECOLI 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] [[http://www.uniprot.org/uniprot/RFAH_ECOLI RFAH_ECOLI]] Enhances distal genes transcription elongation in a specialized subset of operons that encode extracytoplasmic components. RfaH is recruited into a multi-component RNA polymerase complex by the ops element, which is a short conserved DNA sequence located downstream of the main promoter of these operons. Once bound, RfaH suppresses pausing and inhibits Rho-dependent and intrinsic termination at a subset of sites. Termination signals are bypassed, which allows complete synthesis of long RNA chains. Enhances expression of several operons involved in synthesis of lipopolysaccharides, exopolysaccharides, hemolysin, and sex factor. Also negatively controls expression and surface presentation of AG43 and possibly another AG43-independent factor that mediates cell-cell interactions and biofilm formation.<ref>PMID:1584020</ref> <ref>PMID:8606157</ref> <ref>PMID:8951819</ref> <ref>PMID:9171395</ref> <ref>PMID:9426123</ref> <ref>PMID:10660066</ref> <ref>PMID:12007406</ref> <ref>PMID:11983161</ref> <ref>PMID:16452414</ref> [[http://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] [[http://www.uniprot.org/uniprot/RPOB_ECOLI RPOB_ECOLI]] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.[HAMAP-Rule:MF_01321] | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: DNA-directed RNA polymerase]] | ||
| + | [[Category: Artsimovitch, I]] | ||
| + | [[Category: Darst, S A]] | ||
| + | [[Category: Kang, J Y]] | ||
| + | [[Category: Landick, R]] | ||
| + | [[Category: Anti-pausing]] | ||
| + | [[Category: Elongation complex]] | ||
| + | [[Category: Rnap]] | ||
| + | [[Category: Transcription]] | ||
| + | [[Category: Transcription-dna-rna complex]] | ||
Revision as of 07:14, 25 July 2018
CryoEM structure of E.coli RNA polymerase elongation complex bound with RfaH
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