Intermediates in the Sox sulfur oxidation pathway are bound to a sulfane conjugate of the carrier protein SoxYZ
Please always quote using this URN: urn:nbn:de:bvb:20-opus-171147
- The Sox pathway found in many sulfur bacteria oxidizes thiosulfate to sulfate. Pathway intermediates are covalently bound to a cysteine residue in the carrier protein SoxYZ. We have used biochemical complementation by SoxYZ-conjugates to probe the identity of the intermediates in the Sox pathway. We find that unconjugated SoxYZ and SoxYZ-S-sulfonate are unlikely to be intermediates during normal turnover in disagreement with current models. By contrast, conjugates with multiple sulfane atoms are readily metabolised by the Sox pathway. The mostThe Sox pathway found in many sulfur bacteria oxidizes thiosulfate to sulfate. Pathway intermediates are covalently bound to a cysteine residue in the carrier protein SoxYZ. We have used biochemical complementation by SoxYZ-conjugates to probe the identity of the intermediates in the Sox pathway. We find that unconjugated SoxYZ and SoxYZ-S-sulfonate are unlikely to be intermediates during normal turnover in disagreement with current models. By contrast, conjugates with multiple sulfane atoms are readily metabolised by the Sox pathway. The most parsimonious interpretation of these data is that the true carrier species in the Sox pathway is a SoxYZ-S-sulfane adduct.…
Author: | Daniel B. Grabarczyk, Ben C. Berks |
---|---|
URN: | urn:nbn:de:bvb:20-opus-171147 |
Document Type: | Journal article |
Faculties: | Fakultät für Biologie / Rudolf-Virchow-Zentrum |
Language: | English |
Parent Title (English): | PLoS ONE |
Year of Completion: | 2017 |
Volume: | 12 |
Issue: | 3 |
Pagenumber: | e0173395 |
Source: | PLoS ONE 12(3):e0173395 (2017). DOI: 10.1371/journal.pone.0173395 |
DOI: | https://doi.org/10.1371/journal.pone.0173395 |
Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/28257465 |
Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |
Tag: | cysteine; oxidation; sulfates; sulfides; sulfites; sulfur; thermodynamics; thiosulfates |
Release Date: | 2019/10/16 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |