A L-tryptophan-highly productive strain TQ2223 was derived from Corynebacterium glutamicum Tx5-32 by stepwise mutagenic treatments with DES.
英
美
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以谷氨酸棒桿菌Tx5 - 32 (Phe- +Tyr- )為出發(fā)菌株 ,經(jīng)硫酸二乙酯 (DES)多次誘變處理 ,定向選育出一株L -色氨酸產(chǎn)生菌TQ2 2 2 3(Phe- +Tyr- +5 -MTr+5 -FTr+SGr+CINr)。
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