3e9j

From Proteopedia

(Difference between revisions)

Revision as of 18:03, 25 December 2014

Structure of the charge-transfer intermediate of the transmembrane redox catalyst DsbB

Structural highlights

3e9j is a 4 chain structure with sequence from Escherichia coli k-12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Gene:	dsbA, dsf, ppfA, b3860, JW3832 (Escherichia coli K-12), dsbB, roxB, ycgA, b1185, JW5182 (Escherichia coli K-12)
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[DSBA_ECOLI] Required for disulfide bond formation in some periplasmic proteins such as PhoA or OmpA. Acts by transferring its disulfide bond to other proteins and is reduced in the process. DsbA is reoxidized by DsbB. Required for pilus biogenesis. PhoP-regulated transcription is redox-sensitive, being activated when the periplasm becomes more reducing (deletion of dsbA/dsbB, treatment with dithiothreitol). MgrB acts between DsbA/DsbB and PhoP/PhoQ in this pathway.^[1] ^[2] [DSBB_ECOLI] Required for disulfide bond formation in some periplasmic proteins such as PhoA or OmpA. Acts by oxidizing the DsbA protein.^[3] ^[4]

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

Disulfide bond formation is a critical step in the folding of many secretory proteins. In bacteria, disulfide bonds are introduced by the periplasmic dithiol oxidase DsbA, which transfers its catalytic disulfide bond to folding polypeptides. Reduced DsbA is reoxidized by ubiquinone Q8, catalyzed by inner membrane quinone reductase DsbB. Here, we report the preparation of a kinetically stable ternary complex between wild-type DsbB, containing all essential cysteines, Q8 and DsbA covalently bound to DsbB. The crystal structure of this trapped DsbB reaction intermediate exhibits a charge-transfer interaction between Q8 and the Cys44 in the DsbB reaction center providing experimental evidence for the mechanism of de novo disulfide bond generation in DsbB.

Preparation and structure of the charge-transfer intermediate of the transmembrane redox catalyst DsbB.,Malojcic G, Owen RL, Grimshaw JP, Glockshuber R FEBS Lett. 2008 Oct 15;582(23-24):3301-7. Epub 2008 Sep 5. PMID:18775700^[5]

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

References

↑ Akiyama Y, Kamitani S, Kusukawa N, Ito K. In vitro catalysis of oxidative folding of disulfide-bonded proteins by the Escherichia coli dsbA (ppfA) gene product. J Biol Chem. 1992 Nov 5;267(31):22440-5. PMID:1429594
↑ Lippa AM, Goulian M. Perturbation of the oxidizing environment of the periplasm stimulates the PhoQ/PhoP system in Escherichia coli. J Bacteriol. 2012 Mar;194(6):1457-63. doi: 10.1128/JB.06055-11. Epub 2012 Jan 20. PMID:22267510 doi:http://dx.doi.org/10.1128/JB.06055-11
↑ Bardwell JC, Lee JO, Jander G, Martin N, Belin D, Beckwith J. A pathway for disulfide bond formation in vivo. Proc Natl Acad Sci U S A. 1993 Feb 1;90(3):1038-42. PMID:8430071
↑ Missiakas D, Georgopoulos C, Raina S. Identification and characterization of the Escherichia coli gene dsbB, whose product is involved in the formation of disulfide bonds in vivo. Proc Natl Acad Sci U S A. 1993 Aug 1;90(15):7084-8. PMID:7688471
↑ Malojcic G, Owen RL, Grimshaw JP, Glockshuber R. Preparation and structure of the charge-transfer intermediate of the transmembrane redox catalyst DsbB. FEBS Lett. 2008 Oct 15;582(23-24):3301-7. Epub 2008 Sep 5. PMID:18775700 doi:S0014-5793(08)00718-7

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/3e9j"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[3e9j]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli_k-12 Escherichia coli k-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3E9J OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3E9J FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=UQ1:UBIQUINONE-1'>UQ1</scene><br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=UQ1:UBIQUINONE-1'>UQ1</scene></td></tr>
-<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dsbA, dsf, ppfA, b3860, JW3832 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12]), dsbB, roxB, ycgA, b1185, JW5182 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dsbA, dsf, ppfA, b3860, JW3832 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12]), dsbB, roxB, ycgA, b1185, JW5182 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 Escherichia coli K-12])</td></tr>
-<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3e9j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3e9j OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3e9j RCSB], [http://www.ebi.ac.uk/pdbsum/3e9j 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=3e9j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3e9j OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3e9j RCSB], [http://www.ebi.ac.uk/pdbsum/3e9j PDBsum]</span></td></tr>
-<table>
+</table>
+== Function ==
+[[http://www.uniprot.org/uniprot/DSBA_ECOLI DSBA_ECOLI]] Required for disulfide bond formation in some periplasmic proteins such as PhoA or OmpA. Acts by transferring its disulfide bond to other proteins and is reduced in the process. DsbA is reoxidized by DsbB. Required for pilus biogenesis. PhoP-regulated transcription is redox-sensitive, being activated when the periplasm becomes more reducing (deletion of dsbA/dsbB, treatment with dithiothreitol). MgrB acts between DsbA/DsbB and PhoP/PhoQ in this pathway.<ref>PMID:1429594</ref> <ref>PMID:22267510</ref>  [[http://www.uniprot.org/uniprot/DSBB_ECOLI DSBB_ECOLI]] Required for disulfide bond formation in some periplasmic proteins such as PhoA or OmpA. Acts by oxidizing the DsbA protein.<ref>PMID:8430071</ref> <ref>PMID:7688471</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 33: / Line 35: @@
 </StructureSection>
 [[Category: Escherichia coli k-12]]
-[[Category: Glockshuber, R.]]
+[[Category: Glockshuber, R]]
-[[Category: Malojcic, G.]]
+[[Category: Malojcic, G]]
-[[Category: Owen, R L.]]
+[[Category: Owen, R L]]
 [[Category: Cell inner membrane]]
 [[Category: Cell membrane]]

3e9j

From Proteopedia

Revision as of 18:03, 25 December 2014

Structure of the charge-transfer intermediate of the transmembrane redox catalyst DsbB

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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