Levansucrase and sucrase synthesis operon antiterminator

UniProtKB accession:  P15401

Grouped By:  Matching UniProtKB accession

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.