Reaction: (1) β-sulfoquinovose = 6-deoxy-6-sulfo-D-fructose
(2) β-sulfoquinovose = 6-sulfo-D-rhamnose
For diagram of reaction, click here
Glossary: sulfoquinovose = 6-deoxy-6-sulfo-D-glucopyranose
Other name(s): yihS (gene name)
Systematic name: 6-deoxy-6-sulfo-β-D-glucopyranose aldose-ketose-isomerase
Comments: The enzyme, characterized from the bacterium Escherichia coli, is involved in the degradation pathway of sulfoquinovose, the polar headgroup of sulfolipids found in the photosynthetic membranes of all higher plants, mosses, ferns, algae, and most photosynthetic bacteria, as well as the surface layer of some archaea.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:
References:
1. Denger, K., Weiss, M., Felux, A.K., Schneider, A., Mayer, C., Spiteller, D., Huhn, T., Cook, A.M. and Schleheck, D. Sulphoglycolysis in Escherichia coli K-12 closes a gap in the biogeochemical sulphur cycle. Nature 507 (2014) 114-117. [PMID: 24463506]
2. Sharma, M., Abayakoon, P., Epa, R., Jin, Y., Lingford, J.P., Shimada, T., Nakano, M., Mui, J.W., Ishihama, A., Goddard-Borger, E.D., Davies, G.J. and Williams, S.J. Molecular basis of sulfosugar selectivity in sulfoglycolysis. ACS Cent. Sci. 7 (2021) 476-487. [PMID: 33791429]