Download MendeleyFast conformational exchange between the sulfur-free and persulfide-bound rhodanese domain of E. coli YgaP
Wang, W., Zhou, P., He, Y., Yu, L., Xiong, Y., Tian, C., Wu, F.(2014) Biochem Biophys Res Commun 452: 817-821
- PubMed: 25204500
- DOI: https://doi.org/10.1016/j.bbrc.2014.09.002
- Primary Citation of Related Structures:
2MRM - PubMed Abstract:
Rhodanese domains are abundant structural modules that catalyze the transfer of a sulfur atom from thiolsulfates to cyanide via formation of a covalent persulfide intermediate that is bound to an essential conserved cysteine residue. In this study, the three-dimensional structure of the rhodanese domain of YgaP from Escherichia coli was determined using solution NMR. A typical rhodanese domain fold was observed, as expected from the high homology with the catalytic domain of other sulfur transferases. The initial sulfur-transfer step and formation of the rhodanese persulfide intermediate were monitored by addition of sodium thiosulfate using two-dimensional (1)H-(15)N correlation spectroscopy. Discrete sharp signals were observed upon substrate addition, indicting fast exchange between sulfur-free and persulfide-intermediate forms. Residues exhibiting pronounced chemical shift changes were mapped to the structure, and included both substrate binding and surrounding residues.
Organizational Affiliation:
Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
