Fujii T, Gramajo H C, Takano E, Bibb M J
Department of Genetics, Jonn Innes Centre, Norwich Research Park, Colney, United Kingdom.
J Bacteriol. 1996 Jun;178(11):3402-5. doi: 10.1128/jb.178.11.3402-3405.1996.
redD and actII-ORF4, regulatory genes required for synthesis of the antibiotics undecylprodigiosin and actinorhodin by Streptomyces coelicolor A3(2), were transcribed in vitro by an RNA polymerase holoenzyme containing sigma hrdD. Disruption of hrdD had no effect on antibiotic production, indicating that redD and actII-ORF4 are transcribed in vivo by at least one other RNA polymerase holoenzyme. These data provide the first experimental evidence that HrdD can function as a sigma factor.
红色糖多孢菌A3(2)合成抗生素十一烷基灵菌红素和放线紫红素所需的调控基因redD和actII-ORF4,在体外由含有σhrdD的RNA聚合酶全酶转录。hrdD的破坏对抗生素生产没有影响,这表明redD和actII-ORF4在体内由至少一种其他RNA聚合酶全酶转录。这些数据提供了首个实验证据,证明HrdD可作为一种σ因子发挥作用。