6tyf: Difference between revisions

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<StructureSection load='6tyf' size='340' side='right'caption='[[6tyf]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
<StructureSection load='6tyf' size='340' side='right'caption='[[6tyf]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[6tyf]] is a 9 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TYF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6TYF FirstGlance]. <br>
<table><tr><td colspan='2'>[[6tyf]] is a 9 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TYF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TYF FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">rpoA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884]), rpoB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884]), rpoC, rpoC_1, rpoC_2, DKC2_0716, ERS007665_00591, ERS023446_00410, ERS031537_00289, ERS124361_01694, EUB02_01475, EUB03_00860, EUB11_05575, SAMEA2682835_07420, SAMEA2682864_01702 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884]), rpoZ, DKC2_1480, DSI35_24025, ERS007657_03145, ERS007661_02963, ERS007663_02972, ERS007665_03743, ERS007670_03615, ERS007679_02942, ERS007681_04445, ERS007722_03066, ERS007741_03196, ERS023446_03677, ERS024213_01369, ERS024276_01577, ERS027644_00478, ERS027646_01439, ERS027651_03169, ERS027653_00843, ERS027659_01429, ERS027661_02200, ERS027666_04715, ERS031537_03443, EU767_08910, EU768_15085, EU769_05250, EU770_14555, EU771_05130, EU773_14340, EU774_06465, EU775_07590, EU776_17830, EU777_06800, EUB02_12495, EUB03_09550, EUB06_03645, EUB07_12165, EUB08_05285, EUB09_00425, EUB10_04215, EUB11_10790, EUB13_01060, EUB14_01055, EUB16_00425, SAMEA2682864_01599, SAMEA2683035_01133 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884]), sigL, sigX, DKC2_0784, DSI35_13315, ERS007657_01744, ERS007661_01946, ERS007670_03245, ERS007672_04865, ERS007688_03724, ERS007722_03570, ERS007731_02151, ERS007741_04102, ERS023446_03871, ERS024213_03781, ERS027644_01708, ERS027646_03649, ERS027651_00554, ERS027654_02031, ERS027659_03608, ERS027661_02428, ERS027666_03497, ERS031537_01383, ERS124361_02832, EU767_20440, EU768_17405, EU769_19535, EU770_10565, EU771_18640, EU773_15915, EU774_01235, EU775_01235, EU776_08285, EU777_18775, EUB02_13395, EUB03_01225, EUB07_01225, EUB08_01615, EUB09_12390, EUB10_16580, EUB11_05940, EUB12_18145, EUB13_14065, EUB14_03980, EUB16_03020, SAMEA2682835_06130, SAMEA2682864_01771, SAMEA2683035_02456 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884])</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]] 3.8&#8491;</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'>[https://proteopedia.org/fgij/fg.htm?mol=6tyf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tyf OCA], [https://pdbe.org/6tyf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6tyf RCSB], [https://www.ebi.ac.uk/pdbsum/6tyf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6tyf ProSAT]</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=6tyf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tyf OCA], [http://pdbe.org/6tyf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6tyf RCSB], [http://www.ebi.ac.uk/pdbsum/6tyf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6tyf ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/A0A045J9E2_MYCTX A0A045J9E2_MYCTX]] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.[RuleBase:RU004279][SAAS:SAAS00365746] [[http://www.uniprot.org/uniprot/RPOB_MYCTO RPOB_MYCTO]] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. [[http://www.uniprot.org/uniprot/RPOA_MYCTA RPOA_MYCTA]] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. [[http://www.uniprot.org/uniprot/A0A045H2R3_MYCTX A0A045H2R3_MYCTX]] 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][SAAS:SAAS00387808]
[https://www.uniprot.org/uniprot/RPOA_MYCTU RPOA_MYCTU] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.[HAMAP-Rule:MF_00059]<ref>PMID:22570422</ref>  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
All organisms-bacteria, archaea, and eukaryotes-have a transcription initiation factor that contains a structural module that binds within the RNA polymerase (RNAP) active-center cleft and interacts with template-strand single-stranded DNA (ssDNA) in the immediate vicinity of the RNAP active center. This transcription initiation-factor structural module preorganizes template-strand ssDNA to engage the RNAP active center, thereby facilitating binding of initiating nucleotides and enabling transcription initiation from initiating mononucleotides. However, this transcription initiation-factor structural module occupies the path of nascent RNA and thus presumably must be displaced before or during initial transcription. Here, we report four sets of crystal structures of bacterial initially transcribing complexes that demonstrate and define details of stepwise, RNA-extension-driven displacement of the "sigma-finger" of the bacterial transcription initiation factor sigma. The structures reveal that-for both the primary sigma-factor and extracytoplasmic (ECF) sigma-factors, and for both 5'-triphosphate RNA and 5'-hydroxy RNA-the "sigma-finger" is displaced in stepwise fashion, progressively folding back upon itself, driven by collision with the RNA 5'-end, upon extension of nascent RNA from approximately 5 nt to approximately 10 nt.


RNA extension drives a stepwise displacement of an initiation-factor structural module in initial transcription.,Li L, Molodtsov V, Lin W, Ebright RH, Zhang Y Proc Natl Acad Sci U S A. 2020 Mar 3. pii: 1920747117. doi:, 10.1073/pnas.1920747117. PMID:32127479<ref>PMID:32127479</ref>
==See Also==
 
*[[RNA polymerase 3D structures|RNA polymerase 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
*[[Sigma factor 3D structures|Sigma factor 3D structures]]
</div>
<div class="pdbe-citations 6tyf" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: DNA-directed RNA polymerase]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Ebright, R H]]
[[Category: Mycobacterium tuberculosis]]
[[Category: Molodtsov, V]]
[[Category: Ebright RH]]
[[Category: Initiation]]
[[Category: Molodtsov V]]
[[Category: Sigma finger displacement]]
[[Category: Transcription]]
[[Category: Tuberculosis]]

Latest revision as of 17:56, 13 March 2024

Crystal structure of MTB sigma L transcription initiation complex with 6 nt long RNA primerCrystal structure of MTB sigma L transcription initiation complex with 6 nt long RNA primer

Structural highlights

6tyf is a 9 chain structure with sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 3.8Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RPOA_MYCTU DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.[HAMAP-Rule:MF_00059][1]

See Also

References

  1. ↑ Hu Y, Morichaud Z, Chen S, Leonetti JP, Brodolin K. Mycobacterium tuberculosis RbpA protein is a new type of transcriptional activator that stabilizes the sigma A-containing RNA polymerase holoenzyme. Nucleic Acids Res. 2012 Aug;40(14):6547-57. doi: 10.1093/nar/gks346. Epub 2012, May 8. PMID:22570422 doi:http://dx.doi.org/10.1093/nar/gks346

6tyf, resolution 3.80Å

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