Abstract
In Sinorhizobium meliloti, the nodD3 gene is transcriptionally controlled by two promoters, P1 and P2. Under P1, there is a 660 bp sequence including a small open reading frame, ORF2, followed by the nodD3 coding region. Genetic analysis using the different deletions on the 3’ ends of P1 downstream sequence showed that the downstream sequence +1–+125nt is essential for P1 expression. Complementation, mutations and nodulation tests demonstrated that the ORF2 auto-represses P1 expression, while the P1 downstream sequence +1–+125nt counteracts it.
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Chen, D., Liu, Y., Zhu, J. et al. Analysis of the downstream region of nodD3 P1 promoter by deletion and complementation tests in Sinorhizobium meliloti . Sci. China Ser. C.-Life Sci. 46, 165–173 (2003). https://doi.org/10.1360/03yc9018
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DOI: https://doi.org/10.1360/03yc9018