Download MendeleyCrystal structure of SsfS6, the putative C-glycosyltransferase involved in SF2575 biosynthesis.
Wang, F., Zhou, M., Singh, S., Yennamalli, R.M., Bingman, C.A., Thorson, J.S., Phillips, G.N.(2013) Proteins 81: 1277-1282
- PubMed: 23526584
- DOI: https://doi.org/10.1002/prot.24289
- Primary Citation of Related Structures:
4FZR, 4G2T - PubMed Abstract:
The molecule known as SF2575 from Streptomyces sp. is a tetracycline polyketide natural product that displays antitumor activity against murine leukemia P388 in vivo. In the SF2575 biosynthetic pathway, SsfS6 has been implicated as the crucial C-glycosyltransferase (C-GT) that forms the C-C glycosidic bond between the sugar and the SF2575 tetracycline-like scaffold. Here, we report the crystal structure of SsfS6 in the free form and in complex with TDP, both at 2.4 Å resolution. The structures reveal SsfS6 to adopt a GT-B fold wherein the TDP and docked putative aglycon are consistent with the overall C-glycosylation reaction. As one of only a few existing structures for C-glycosyltransferases, the structures described herein may serve as a guide to better understand and engineer C-glycosylation.
Organizational Affiliation:
Department of Biochemistry and Cell Biology, Rice University, Houston, Texas 77005, USA.
