MSDSMSYAVLVAATLFLGIGLQIAWLFFSNFIKRKRLESRISEVSIAIGKNAKNPENEAYVLNYLKEKFSPERFENRITDALGLIISVIHIPLSLLITVWYFAMIAGRIFGFMNIEPVVLWVPMILQLLLSIAIFIFSVFIKIVFGRYPGEANGFNKEFIKTIK sieA Has a role in the prevention of superinfection by phages that are insensitive to repression. 164 Superinfection exclusion protein A SIEA_BPP22