1ngm

From Proteopedia

(Difference between revisions)

Revision as of 18:32, 20 November 2019

Crystal structure of a yeast Brf1-TBP-DNA ternary complex

Structural highlights

1ngm is a 16 chain structure with sequence from Atcc 18824. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[TF3B_YEAST] General activator of RNA polymerase III transcription. Interacts with TBP. Binds to Pol III subunit C34 and to the TAU135 component of TFIIIC. [TBP_YEAST] General transcription factor that functions at the core of the DNA-binding general transcription factor complex TFIID. Binding of TFIID to a promoter (with or without TATA element) is the initial step in preinitiation complex (PIC) formation. TFIID plays a key role in the regulation of gene expression by RNA polymerase II through different activities such as transcription activator interaction, core promoter recognition and selectivity, TFIIA and TFIIB interaction, chromatin modification (histone acetylation by TAF1), facilitation of DNA opening and initiation of transcription.^[1] ^[2] ^[3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Transcription factor IIIB (TFIIIB), consisting of the TATA-binding protein (TBP), TFIIB-related factor (Brf1) and Bdp1, is a central component in basal and regulated transcription by RNA polymerase III. TFIIIB recruits its polymerase to the promoter and subsequently has an essential role in the formation of the open initiation complex. The amino-terminal half of Brf1 shares a high degree of sequence similarity with the polymerase II general transcription factor TFIIB, but it is the carboxy-terminal half of Brf1 that contributes most of its binding affinity with TBP. The principal anchoring region is located between residues 435 and 545 of yeast Brf1, comprising its homology domain II. The same region also provides the primary interface for assembling Bdp1 into the TFIIIB complex. We report here a 2.95 A resolution crystal structure of the ternary complex containing Brf1 homology domain II, the conserved region of TBP and 19 base pairs of U6 promoter DNA. The structure reveals the core interface for assembly of TFIIIB and demonstrates how the loosely packed Brf1 domain achieves remarkable binding specificity with the convex and lateral surfaces of TBP.

Crystal structure of a transcription factor IIIB core interface ternary complex.,Juo ZS, Kassavetis GA, Wang J, Geiduschek EP, Sigler PB Nature. 2003 Apr 3;422(6931):534-9. Epub 2003 Mar 26. PMID:12660736^[4]

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

References

↑ Hampsey M. Molecular genetics of the RNA polymerase II general transcriptional machinery. Microbiol Mol Biol Rev. 1998 Jun;62(2):465-503. PMID:9618449
↑ Sanders SL, Garbett KA, Weil PA. Molecular characterization of Saccharomyces cerevisiae TFIID. Mol Cell Biol. 2002 Aug;22(16):6000-13. PMID:12138208
↑ Martinez E. Multi-protein complexes in eukaryotic gene transcription. Plant Mol Biol. 2002 Dec;50(6):925-47. PMID:12516863
↑ Juo ZS, Kassavetis GA, Wang J, Geiduschek EP, Sigler PB. Crystal structure of a transcription factor IIIB core interface ternary complex. Nature. 2003 Apr 3;422(6931):534-9. Epub 2003 Mar 26. PMID:12660736 doi:10.1038/nature01534

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1ngm"

@@ Line 1: / Line 1: @@
 ==Crystal structure of a yeast Brf1-TBP-DNA ternary complex==
-<StructureSection load='1ngm' size='340' side='right' caption='[[1ngm]], [[Resolution|resolution]] 2.95&Aring;' scene=''>
+<StructureSection load='1ngm' size='340' side='right'caption='[[1ngm]], [[Resolution|resolution]] 2.95&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1ngm]] is a 16 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NGM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1NGM FirstGlance]. <br>
@@ Line 27: / Line 27: @@
 </div>
 <div class="pdbe-citations 1ngm" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[TATA-Binding Protein|TATA-Binding Protein]]
 == References ==
 <references/>
@@ Line 32: / Line 35: @@
 </StructureSection>
 [[Category: Atcc 18824]]
+[[Category: Large Structures]]
 [[Category: Geiduschek, E P]]
 [[Category: Juo, Z S]]

1ngm

From Proteopedia

Revision as of 18:32, 20 November 2019

Crystal structure of a yeast Brf1-TBP-DNA ternary complex

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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