1ku3

From Proteopedia

(Difference between revisions)

Revision as of 06:35, 18 August 2021

Crystal Structure of Thermus aquaticus RNA Polymerase Sigma Subunit Fragment, Region 4

Structural highlights

1ku3 is a 1 chain structure with sequence from Atcc 25104. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1ku2, 1ku7
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[Q9EZJ8_THEAQ] Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released (By similarity).[RuleBase:RU000715]

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

The sigma subunit is the key regulator of bacterial transcription. Proteolysis of Thermus aquaticus sigma(A), which occurred in situ during crystallization, reveals three domains, sigma(2), sigma(3), and sigma(4), connected by flexible linkers. Crystal structures of each domain were determined, as well as of sigma(4) complexed with -35 element DNA. Exposed surfaces of each domain are important for RNA polymerase binding. Universally conserved residues important for -10 element recognition and melting lie on one face of sigma(2), while residues important for extended -10 recognition lie on sigma(3). Genetic studies correctly predicted that a helix-turn-helix motif in sigma(4) recognizes the -35 element but not the details of the protein-DNA interactions. Positive control mutants in sigma(4) cluster in two regions, positioned to interact with activators bound just upstream or downstream of the -35 element.

Structure of the bacterial RNA polymerase promoter specificity sigma subunit.,Campbell EA, Muzzin O, Chlenov M, Sun JL, Olson CA, Weinman O, Trester-Zedlitz ML, Darst SA Mol Cell. 2002 Mar;9(3):527-39. PMID:11931761^[1]

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

References

↑ Campbell EA, Muzzin O, Chlenov M, Sun JL, Olson CA, Weinman O, Trester-Zedlitz ML, Darst SA. Structure of the bacterial RNA polymerase promoter specificity sigma subunit. Mol Cell. 2002 Mar;9(3):527-39. PMID:11931761

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/1ku3"

@@ Line 3: / Line 3: @@
 <StructureSection load='1ku3' size='340' side='right'caption='[[1ku3]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1ku3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_25104 Atcc 25104]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KU3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KU3 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1ku3]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_25104 Atcc 25104]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KU3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KU3 FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ku2|1ku2]], [[1ku7|1ku7]]</td></tr>
+</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1ku2|1ku2]], [[1ku7|1ku7]]</div></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=1ku3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ku3 OCA], [http://pdbe.org/1ku3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ku3 RCSB], [http://www.ebi.ac.uk/pdbsum/1ku3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ku3 ProSAT]</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=1ku3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ku3 OCA], [https://pdbe.org/1ku3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ku3 RCSB], [https://www.ebi.ac.uk/pdbsum/1ku3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ku3 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/Q9EZJ8_THEAQ Q9EZJ8_THEAQ]] Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released (By similarity).[RuleBase:RU000715]
+[[https://www.uniprot.org/uniprot/Q9EZJ8_THEAQ Q9EZJ8_THEAQ]] Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released (By similarity).[RuleBase:RU000715]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 30: / Line 30: @@
 ==See Also==
-*[[Sigma factor|Sigma factor]]
+*[[Sigma factor 3D structures|Sigma factor 3D structures]]
 == References ==
 <references/>

1ku3

From Proteopedia

Revision as of 06:35, 18 August 2021

Crystal Structure of Thermus aquaticus RNA Polymerase Sigma Subunit Fragment, Region 4

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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