2c98: Difference between revisions

Revision as of 10:51, 26 February 2020

Structural basis of the nucleotide driven conformational changes in the AAA domain of transcription activator PspF

Structural highlights

2c98 is a 1 chain structure with sequence from Ecoli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	ADP
Related:	2bjv, 2bjw, 2c96, 2c99, 2c9c
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PSPF_ECOLI] Transcriptional activator for the phage shock protein (psp) operon (pspABCDE) and pspG gene.^[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

Bacterial enhancer-binding proteins (EBP) activate transcription by hydrolyzing ATP to restructure the sigma(54)-RNA polymerase-promoter complex. We compare six high resolution structures (<2.1 A) of the AAA(+) domain of EBP phage shock protein F (PspF) including apo, AMPPNP, Mg(2+)-ATP, and ADP forms. These structures permit a description of the atomic details underpinning the origins of the conformational changes occurring during ATP hydrolysis. Conserved regions of PspF's AAA(+) domain respond distinctively to nucleotide binding and hydrolysis, suggesting functional roles during the hydrolysis cycle, which completely agree with those derived from activities of PspF mutated at these positions. We propose a putative atomic switch that is responsible for coupling structural changes in the nucleotide-binding site to the repositioning of the sigma(54)-interacting loops. Striking similarities in nucleotide-specific conformational changes and atomic switch exist between PspF and the large T antigen helicase, suggesting conservation in the origin of those events amongst AAA(+) proteins.

Structural basis of the nucleotide driven conformational changes in the AAA+ domain of transcription activator PspF.,Rappas M, Schumacher J, Niwa H, Buck M, Zhang X J Mol Biol. 2006 Mar 24;357(2):481-92. Epub 2006 Jan 13. PMID:16430918^[4]

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

References

↑ Jovanovic G, Weiner L, Model P. Identification, nucleotide sequence, and characterization of PspF, the transcriptional activator of the Escherichia coli stress-induced psp operon. J Bacteriol. 1996 Apr;178(7):1936-45. PMID:8606168
↑ Lloyd LJ, Jones SE, Jovanovic G, Gyaneshwar P, Rolfe MD, Thompson A, Hinton JC, Buck M. Identification of a new member of the phage shock protein response in Escherichia coli, the phage shock protein G (PspG). J Biol Chem. 2004 Dec 31;279(53):55707-14. Epub 2004 Oct 13. PMID:15485810 doi:10.1074/jbc.M408994200
↑ Joly N, Burrows PC, Engl C, Jovanovic G, Buck M. A lower-order oligomer form of phage shock protein A (PspA) stably associates with the hexameric AAA(+) transcription activator protein PspF for negative regulation. J Mol Biol. 2009 Dec 11;394(4):764-75. doi: 10.1016/j.jmb.2009.09.055. Epub 2009 , Oct 3. PMID:19804784 doi:10.1016/j.jmb.2009.09.055
↑ Rappas M, Schumacher J, Niwa H, Buck M, Zhang X. Structural basis of the nucleotide driven conformational changes in the AAA+ domain of transcription activator PspF. J Mol Biol. 2006 Mar 24;357(2):481-92. Epub 2006 Jan 13. PMID:16430918 doi:10.1016/j.jmb.2005.12.052

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OCA

[1] Jovanovic G, Weiner L, Model P. Identification, nucleotide sequence, and characterization of PspF, the transcriptional activator of the Escherichia coli stress-induced psp operon. J Bacteriol. 1996 Apr;178(7):1936-45. PMID:8606168

[2] Lloyd LJ, Jones SE, Jovanovic G, Gyaneshwar P, Rolfe MD, Thompson A, Hinton JC, Buck M. Identification of a new member of the phage shock protein response in Escherichia coli, the phage shock protein G (PspG). J Biol Chem. 2004 Dec 31;279(53):55707-14. Epub 2004 Oct 13. PMID:15485810 doi:10.1074/jbc.M408994200

[3] Joly N, Burrows PC, Engl C, Jovanovic G, Buck M. A lower-order oligomer form of phage shock protein A (PspA) stably associates with the hexameric AAA(+) transcription activator protein PspF for negative regulation. J Mol Biol. 2009 Dec 11;394(4):764-75. doi: 10.1016/j.jmb.2009.09.055. Epub 2009 , Oct 3. PMID:19804784 doi:10.1016/j.jmb.2009.09.055

[4] Rappas M, Schumacher J, Niwa H, Buck M, Zhang X. Structural basis of the nucleotide driven conformational changes in the AAA+ domain of transcription activator PspF. J Mol Biol. 2006 Mar 24;357(2):481-92. Epub 2006 Jan 13. PMID:16430918 doi:10.1016/j.jmb.2005.12.052

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@@ Line 1: / Line 1: @@
 ==Structural basis of the nucleotide driven conformational changes in the AAA domain of transcription activator PspF==
-<StructureSection load='2c98' size='340' side='right' caption='[[2c98]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
+<StructureSection load='2c98' size='340' side='right'caption='[[2c98]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2c98]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C98 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2C98 FirstGlance]. <br>
@@ Line 37: / Line 37: @@
 </StructureSection>
 [[Category: Ecoli]]
+[[Category: Large Structures]]
 [[Category: Buck, M]]
 [[Category: Niwa, H]]

2c98: Difference between revisions

Revision as of 10:51, 26 February 2020

Structural basis of the nucleotide driven conformational changes in the AAA domain of transcription activator PspF

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

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