attenuation
基础科学

        1.A‘back-up’mechanismthat helps to regulate gene expression in bac-terial OPERONS. An operon has a leader se-quence,which lies downstream of theoperons promotor and operator sites,but be-fore the start of the structural genes. An at-tenuator site is a seg......（本文共 1326 字）     [阅读本文] >>