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Báo cáo khoa học: DNA-binding and transcription characteristics of three cloned sigma factors from mustard (Sinapis alba L.) suggest overlapping and distinct roles in plastid gene expression

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:13

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We have isolated and studied the cloned sigma factors SASIG1-3 from mustard (Sinapis alba). In functional ana-lyses using both promoter and factor mutants,the three recombinant proteins all had similar basic properties but also revealed differences in promoter preference and requirements for single nucleotide positions. Directedmuta-genesis of SASIG1 identified critical residues within the conserved regions 2.4 and 4.2 necessary for binding of the )10 and)35 promoter elements,respectively.

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Nội dung Text: Báo cáo khoa học: DNA-binding and transcription characteristics of three cloned sigma factors from mustard (Sinapis alba L.) suggest overlapping and distinct roles in plastid gene expression

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