Superinfection exclusion protein B MMSIEMDPLVILGRVFSNEPLERTMYMIVIWVGLLLLSPDNWPEYVNERIGIPHVWHVFVFALAFSLAINVHRLSAIASARYKRFKLRKRIKMQNDKVRSVIQNLTEEQSMVLCAALNEGRKYVVTSKQFPYISELIELGVLNKTFSRWNGKHILFPIEDIYWTELVASYDPYNIEIKPRPISK SIEB_LAMBD 184 git Has a role in the prevention of superinfection by phages that are insensitive to repression. sieB