The Enzyme Database

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Accepted name: sulfoacetaldehyde reductase (NADH)
Reaction: isethionate + NAD+ = 2-sulfoacetaldehyde + NADH + H+
Glossary: isethionate = 2-hydroxyethanesulfonate
2-sulfoacetaldehyde = 2-oxoethanesulfonate
Other name(s): sarD (gene name); tauF (gene name); sqwF (gene name); BkTauF
Systematic name: isethionate:NAD+ oxidoreductase
Comments: The enzymes from the bacteria Bilophila wadsworthia and Clostridium sp. MSTE9 catalyse the reaction only in the reduction direction. In the bacterium Bifidobacterium kashiwanohense the optimal reaction pH for sulfoacetaldehyde reduction is 7.5, while that for isethionate oxidation is 10.0. cf. EC, sulfoacetaldehyde reductase (NADPH).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Peck, S.C., Denger, K., Burrichter, A., Irwin, S.M., Balskus, E.P. and Schleheck, D. A glycyl radical enzyme enables hydrogen sulfide production by the human intestinal bacterium Bilophila wadsworthia. Proc. Natl. Acad. Sci. USA 116 (2019) 3171–3176. [DOI] [PMID: 30718429]
2.  Xing, M., Wei, Y., Zhou, Y., Zhang, J., Lin, L., Hu, Y., Hua, G.,, N. Nanjaraj Urs, A., Liu, D., Wang, F., Guo, C., Tong, Y., Li, M., Liu, Y., Ang, E.L., Zhao, H., Yuchi, Z. and Zhang, Y. Radical-mediated C-S bond cleavage in C2 sulfonate degradation by anaerobic bacteria. Nat. Commun. 10:1609 (2019). [DOI] [PMID: 30962433]
3.  Zhou, Y., Wei, Y., Nanjaraj Urs, A.N., Lin, L., Xu, T., Hu, Y., Ang, E.L., Zhao, H., Yuchi, Z. and Zhang, Y. Identification and characterization of a new sulfoacetaldehyde reductase from the human gut bacterium Bifidobacterium kashiwanohense. Biosci. Rep. 39 (2019) . [DOI] [PMID: 31123167]
4.  Liu, J., Wei, Y., Ma, K., An, J., Liu, X., Liu, Y., Ang, E.L., Zhao, H. and Zhang, Y. Mechanistically diverse pathways for sulfoquinovose degradation in bacteria. ACS Catal. 11 (2021) 14740–14750. [DOI]
[EC created 2022]

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