This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

1q1h

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:40, 9 December 2020

An extended winged helix domain in general transcription factor E/IIE alpha

Structural highlights

1q1h is a 1 chain structure with sequence from Atcc 35091. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	tfE (ATCC 35091)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[TFE_SULSO] Transcription factor that plays a role in the activation of archaeal genes transcribed by RNA polymerase. Facilitates transcription initiation by enhancing TATA-box recognition by TATA-box-binding protein (Tbp), and transcription factor B (Tfb) and RNA polymerase recruitment. Not absolutely required for transcription in vitro, but particularly important in cases where Tbp or Tfb function is not optimal. It dynamically alters the nucleic acid-binding properties of RNA polymerases by stabilizing the initiation complex and destabilizing elongation complexes. Seems to translocate with the RNA polymerase following initiation and acts by binding to the non template strand of the transcription bubble in elongation complexes.^[1]

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

Initiation of eukaryotic mRNA transcription requires melting of promoter DNA with the help of the general transcription factors TFIIE and TFIIH. Here we define a conserved and functionally essential N-terminal domain in TFE, the archaeal homolog of the large TFIIE subunit alpha. X-ray crystallography shows that this TFE domain adopts a winged helix-turn-helix (winged helix) fold, extended by specific alpha-helices at the N and C termini. Although the winged helix fold is often found in DNA-binding proteins, we show that TFE is not a typical DNA-binding winged helix protein, because its putative DNA-binding face shows a negatively charged groove and an unusually long wing, and because the domain lacks DNA-binding activity in vitro. The groove and a conserved hydrophobic surface patch on the additional N-terminal alpha-helix may, however, allow for interactions with other general transcription factors and RNA polymerase. Homology modeling shows that the TFE domain is conserved in TFIIE alpha, including the potential functional surfaces.

An extended winged helix domain in general transcription factor E/IIE alpha.,Meinhart A, Blobel J, Cramer P J Biol Chem. 2003 Nov 28;278(48):48267-74. Epub 2003 Sep 17. PMID:13679366^[2]

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

References

↑ Bell SD, Brinkman AB, van der Oost J, Jackson SP. The archaeal TFIIEalpha homologue facilitates transcription initiation by enhancing TATA-box recognition. EMBO Rep. 2001 Feb;2(2):133-8. PMID:11258705 doi:http://dx.doi.org/10.1093/embo-reports/kve021
↑ Meinhart A, Blobel J, Cramer P. An extended winged helix domain in general transcription factor E/IIE alpha. J Biol Chem. 2003 Nov 28;278(48):48267-74. Epub 2003 Sep 17. PMID:13679366 doi:10.1074/jbc.M307874200

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1q1h"

@@ Line 1: / Line 1: @@
 ==An extended winged helix domain in general transcription factor E/IIE alpha==
-<StructureSection load='1q1h' size='340' side='right' caption='[[1q1h]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
+<StructureSection load='1q1h' size='340' side='right'caption='[[1q1h]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1q1h]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_35091 Atcc 35091]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q1H OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1Q1H FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1q1h]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_35091 Atcc 35091]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q1H OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1Q1H FirstGlance]. <br>
 </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">tfE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2287 ATCC 35091])</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=1q1h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q1h OCA], [http://pdbe.org/1q1h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1q1h RCSB], [http://www.ebi.ac.uk/pdbsum/1q1h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1q1h ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1q1h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q1h OCA], [http://pdbe.org/1q1h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1q1h RCSB], [http://www.ebi.ac.uk/pdbsum/1q1h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1q1h ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 33: / Line 33: @@
 </StructureSection>
 [[Category: Atcc 35091]]
+[[Category: Large Structures]]
 [[Category: Blobel, J]]
 [[Category: Cramer, P]]

1q1h

From Proteopedia

Revision as of 07:40, 9 December 2020

An extended winged helix domain in general transcription factor E/IIE alpha

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox