2d08: Difference between revisions
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< | ==A THIOREDOXIN- SOXV INVOLVED IN REDOX REACTIONS OF SULFUR== | ||
<StructureSection load='2d08' size='340' side='right'caption='[[2d08]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2D08 FirstGlance]. <br> | |||
</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=2d08 FirstGlance], [https://www.ebi.ac.uk/pdbsum/2d08 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2d08 ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Microbial redox reactions involving inorganic sulfur compounds, mainly the sulfur anions, are one of the vital reactions responsible for the environmental sulfur balance. These reactions are mediated by phylogenetically diverse prokaryotes, some of which also take part in the extraction of metal ions from their sulfur containing ores. These sulfur oxidizers oxidize inorganic sulfur compounds like sulfide, thiosulfate etc. to produce reductants that are used for carbon dioxide fixation or in respiratory electron transfer chains. The sulfur oxidizing gene cluster (sox) of alpha-Proteobacteria comprises of at least 15 genes, forming two transcriptional units, viz., soxSR and soxVWXYZABCDEFGH. SoxV is known to be a CcdA homolog involved in the transport of reductants from cytoplasm to periplasm. SoxW and SoxS are periplasmic thioredoxins, which (SoxW) interact with SoxV and thereby help in the redox reactions. We have employed homology modeling to construct the three-dimensional structures of the SoxV, SoxW and SoxS proteins from Rhodovulum sulfidophilum. With the help of docking and molecular dynamics simulations we have identified the amino acid residues of these proteins involved in the interaction. The probable biochemical mechanism of the transport of reductants through the interactions of these proteins has also been investigated. Our study provides a rational basis to interpret the molecular mechanism of the biochemistry of sulfur anion oxidation reactions by these ecologically important organisms. | |||
Structural insight into the interactions of SoxV, SoxW and SoxS in the process of transport of reductants during sulfur oxidation by the novel global sulfur oxidation reaction cycle.,Bagchi A, Ghosh TC Biophys Chem. 2006 Jan 1;119(1):7-13. Epub 2005 Sep 23. PMID:16183190<ref>PMID:16183190</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2d08" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | [[Category: Theoretical Model]] | ||
[[Category: Large Structures]] | |||
== | |||
< | |||
[[Category: Bagchi, A]] | [[Category: Bagchi, A]] | ||
[[Category: Ghosh, T C]] | [[Category: Ghosh, T C]] | ||
Latest revision as of 13:24, 8 December 2021
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A THIOREDOXIN- SOXV INVOLVED IN REDOX REACTIONS OF SULFURA THIOREDOXIN- SOXV INVOLVED IN REDOX REACTIONS OF SULFUR
Structural highlights
Publication Abstract from PubMedMicrobial redox reactions involving inorganic sulfur compounds, mainly the sulfur anions, are one of the vital reactions responsible for the environmental sulfur balance. These reactions are mediated by phylogenetically diverse prokaryotes, some of which also take part in the extraction of metal ions from their sulfur containing ores. These sulfur oxidizers oxidize inorganic sulfur compounds like sulfide, thiosulfate etc. to produce reductants that are used for carbon dioxide fixation or in respiratory electron transfer chains. The sulfur oxidizing gene cluster (sox) of alpha-Proteobacteria comprises of at least 15 genes, forming two transcriptional units, viz., soxSR and soxVWXYZABCDEFGH. SoxV is known to be a CcdA homolog involved in the transport of reductants from cytoplasm to periplasm. SoxW and SoxS are periplasmic thioredoxins, which (SoxW) interact with SoxV and thereby help in the redox reactions. We have employed homology modeling to construct the three-dimensional structures of the SoxV, SoxW and SoxS proteins from Rhodovulum sulfidophilum. With the help of docking and molecular dynamics simulations we have identified the amino acid residues of these proteins involved in the interaction. The probable biochemical mechanism of the transport of reductants through the interactions of these proteins has also been investigated. Our study provides a rational basis to interpret the molecular mechanism of the biochemistry of sulfur anion oxidation reactions by these ecologically important organisms. Structural insight into the interactions of SoxV, SoxW and SoxS in the process of transport of reductants during sulfur oxidation by the novel global sulfur oxidation reaction cycle.,Bagchi A, Ghosh TC Biophys Chem. 2006 Jan 1;119(1):7-13. Epub 2005 Sep 23. PMID:16183190[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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