Levansucrase and sucrase synthesis operon antiterminator

UniProtKB accession: P15401

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Polymer Entities matching query 448

Go to UniProtKB: P15401

UniProtKB description: 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.

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