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sacB | Levansucrase; Evidence 1a: Function experimentally demonstrated in the studied strain; Product type e: enzyme. (473 aa) | ||||
sacY | Transcriptional antiterminator; In the presence of sucrose, SacY is activated and prevents premature termination of transcription by binding to a RNA- antiterminator (RAT) sequence (partially overlapping with the terminator sequence) located upstream of the sacB gene. Formation of the SacY-RAT complex prevents alternative formation of the terminator, allowing transcription of the sacB gene. In the absence of sucrose, inhibition of SacY activity by SacX leads to termination of transcription; Belongs to the transcriptional antiterminator BglG family. (280 aa) |