EXSA_PSEAE Appears to be required for induction of exoenzyme S synthesis above a low basal level. Exoenzyme S synthesis regulatory protein exsA PA1713 278 MQGAKSLGRKQITSCHWNIPTFEYRVNKEEGVYVLLEGELTVQDIDSTFCLAPGELLFVRRGSYVVSTKGKDSRILWIPLSAQFLQGFVQRFGALLSEVERCDEPVPGIIAFAATPLLAGCVKGLKELLVHEHPPMLACLKIEELLMLFAFSPQGPLLMSVLRQLSNRHVERLQLFMEKHYLNEWKLSDFSREFGMGLTTFKELFGSVYGVSPRAWISERRILYAHQLLLNSDMSIVDIAMEAGFSSQSYFTQSYRRRFGCTPSRSRQGKDECRAKNN exsA