3ios

From Proteopedia

(Difference between revisions)

Current revision

Structure of MTB dsbF in its mixed oxidized and reduced forms

Structural highlights

3ios is a 1 chain structure with sequence from Mycobacterium tuberculosis. This structure supersedes the now removed PDB entry 1zzo. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.6Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

O53924_MYCTO

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 forming (Dsb) proteins ensure correct folding and disulfide bond formation of secreted proteins. Previously, we showed that Mycobacterium tuberculosis DsbE (Mtb DsbE, Rv2878c) aids in vitro oxidative folding of proteins. Here, we present structural, biochemical, and gene expression analyses of another putative Mtb secreted disulfide bond isomerase protein homologous to Mtb DsbE, Mtb DsbF (Rv1677). The X-ray crystal structure of Mtb DsbF reveals a conserved thioredoxin fold although the active-site cysteines may be modeled in both oxidized and reduced forms, in contrast to the solely reduced form in Mtb DsbE. Furthermore, the shorter loop region in Mtb DsbF results in a more solvent-exposed active site. Biochemical analyses show that, similar to Mtb DsbE, Mtb DsbF can oxidatively refold reduced, unfolded hirudin and has a comparable pK(a) for the active-site solvent-exposed cysteine. However, contrary to Mtb DsbE, the Mtb DsbF redox potential is more oxidizing and its reduced state is more stable. From computational genomics analysis of the M. tuberculosis genome, we identified a potential Mtb DsbF interaction partner, Rv1676, a predicted peroxiredoxin. Complex formation is supported by protein coexpression studies and inferred by gene expression profiles, whereby Mtb DsbF and Rv1676 are upregulated under similar environments. Additionally, comparison of Mtb DsbF and Mtb DsbE gene expression data indicates anticorrelated gene expression patterns, suggesting that these two proteins and their functionally linked partners constitute analogous pathways that may function under different conditions.

An extracellular disulfide bond forming protein (DsbF) from Mycobacterium tuberculosis: structural, biochemical, and gene expression analysis.,Chim N, Riley R, The J, Im S, Segelke B, Lekin T, Yu M, Hung LW, Terwilliger T, Whitelegge JP, Goulding CW J Mol Biol. 2010 Mar 12;396(5):1211-26. Epub 2010 Jan 11. PMID:20060836^[1]

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

References

↑ Chim N, Riley R, The J, Im S, Segelke B, Lekin T, Yu M, Hung LW, Terwilliger T, Whitelegge JP, Goulding CW. An extracellular disulfide bond forming protein (DsbF) from Mycobacterium tuberculosis: structural, biochemical, and gene expression analysis. J Mol Biol. 2010 Mar 12;396(5):1211-26. Epub 2010 Jan 11. PMID:20060836 doi:10.1016/j.jmb.2009.12.060

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/3ios"

Categories: Large Structures | Mycobacterium tuberculosis | Chim N | Goulding CW

@@ Line 3: / Line 3: @@
 <StructureSection load='3ios' size='340' side='right'caption='[[3ios]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3ios]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1zzo 1zzo]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IOS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IOS FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3ios]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1zzo 1zzo]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IOS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IOS FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1lu4|1lu4]], [[1kng|1kng]], [[1zzo|1zzo]]</div></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.6&#8491;</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dsbF, MT1716, Rv1677 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884])</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=3ios FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ios OCA], [https://pdbe.org/3ios PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ios RCSB], [https://www.ebi.ac.uk/pdbsum/3ios PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ios ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/O53924_MYCTO O53924_MYCTO]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 35: / Line 36: @@
 </StructureSection>
 [[Category: Large Structures]]
-[[Category: Chim, N]]
+[[Category: Mycobacterium tuberculosis]]
-[[Category: Goulding, C W]]
+[[Category: Chim N]]
-[[Category: Disulfide bond forming protein]]
+[[Category: Goulding CW]]
-[[Category: Isomerase]]
-[[Category: Lipoprotein]]
-[[Category: Oxidoreductase]]
-[[Category: Thioredoxin fold]]

3ios

From Proteopedia

Current revision

Structure of MTB dsbF in its mixed oxidized and reduced forms

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox