NTR(T41Q.N71S.F124T) corresponds to the nitroreductase encoded by the Escherichia coli nfsB gene (UniProtKB:P38489), mutated to carry the amino acid substitutions T41Q, N71S and F124T. NTR(T41Q.N71S.F124T) can be used as a cell ablation tool if it is used in combination with a non-toxic nitroimidazole prodrug substrate that it can convert to a cytotoxic derivative (PMID:17301844, PMID:24428354).