Analogues of prodigiosin, a tripyrrolic pigment produced by Serratia species with potent immunosuppressive and anticancer activities, have been produced by feeding synthetic analogues of the normal precursor MBC to mutants of Serratia sp. ATCC 39006 or to engineered strains of Escherichia coli; in this way it has been shown that the prodigiosin synthesising enzyme, PigC, has a relaxed substrate-specificity.
由沙雷氏菌(Serratia species)产生的一种具有强效免疫抑制和抗癌活性的三
吡咯色素——灵菌红素(prodigiosin)的类似物,已通过向沙雷氏菌A
TCC 39006突变体或经改造的大肠杆菌菌株中投喂正常前体MBC的合成类似物而得到生产。由此表明,灵菌红素合成酶PigC对底物具有较为宽松的特异性。