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FosBx1 family fosfomycin resistance bacillithiol transferase Members of this family, found in Bacillus cereus and related species that synthesis bacillithiol rather than glutathione, are VOC family thiol transferases. They provide resistance to the antibiotic fosfomycin by transferring either bacillithiol or cysteine (but not glutathione) to fosfomycin, leaving it inactive. Note that this family is drawn rather narrowly, and several such families, all non-overlapping, appear in B. cereus and its close relatives. This family includes proteins that have been named FosBx1 (although the original source of that name is hard to trace), and the protein studied crystallographically by Thompson, et al. (see PMID:24004181). |
Jiyao W et al.(2023). "The conserved domain database in 2023.",