5i2d

From Proteopedia

(Difference between revisions)

Revision as of 02:27, 13 July 2016

Crystal structure of T. thermophilus TTHB099 class II transcription activation complex: TAP-RPo

Structural highlights

5i2d is a 22 chain structure with sequence from [1] and Thermus thermophilus (strain hb8 / atcc 27634 / dsm 579). Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Activity:	DNA-directed RNA polymerase, with EC number 2.7.7.6
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RPOC_THET8] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. [RPOB_THET8] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. [RPOA_THET8] DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. [RPOZ_THET8] 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). [Q5SKW1_THET8] Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released (By similarity).[RuleBase:RU000715] 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 primary sigma factor during exponential growth (By similarity).[HAMAP-Rule:MF_00963]

Publication Abstract from PubMed

Class II transcription activators function by binding to a DNA site overlapping a core promoter and stimulating isomerization of an initial RNA polymerase (RNAP)-promoter closed complex into a catalytically competent RNAP-promoter open complex. Here, we report a 4.4 angstrom crystal structure of an intact bacterial class II transcription activation complex. The structure comprises Thermus thermophilus transcription activator protein TTHB099 (TAP) [homolog of Escherichia coli catabolite activator protein (CAP)], T. thermophilus RNAP sigma(A) holoenzyme, a class II TAP-dependent promoter, and a ribotetranucleotide primer. The structure reveals the interactions between RNAP holoenzyme and DNA responsible for transcription initiation and reveals the interactions between TAP and RNAP holoenzyme responsible for transcription activation. The structure indicates that TAP stimulates isomerization through simple, adhesive, stabilizing protein-protein interactions with RNAP holoenzyme.

Structural basis of transcription activation.,Feng Y, Zhang Y, Ebright RH Science. 2016 Jun 10;352(6291):1330-3. doi: 10.1126/science.aaf4417. PMID:27284196^[1]

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

References

↑ Feng Y, Zhang Y, Ebright RH. Structural basis of transcription activation. Science. 2016 Jun 10;352(6291):1330-3. doi: 10.1126/science.aaf4417. PMID:27284196 doi:http://dx.doi.org/10.1126/science.aaf4417

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5i2d"

@@ Line 6: / Line 6: @@
 </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>
 <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=5i2d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5i2d OCA], [http://pdbe.org/5i2d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5i2d RCSB], [http://www.ebi.ac.uk/pdbsum/5i2d 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=5i2d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5i2d OCA], [http://pdbe.org/5i2d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5i2d RCSB], [http://www.ebi.ac.uk/pdbsum/5i2d PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5i2d ProSAT]</span></td></tr>
 </table>
 == Function ==

5i2d

From Proteopedia

Revision as of 02:27, 13 July 2016

Crystal structure of T. thermophilus TTHB099 class II transcription activation complex: TAP-RPo

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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