INDUCIBLE TRANSPORT SYSTEM FOR CITRULLINE IN STREPTOCOCCUS FAECALIS

Abstract

With Streptococcus faecalis F24, it was demonstrated that the citrulline transport mechanism, induced by growth in arginine, follows enzyme kinetics; that cell membranes from induced and non-induced cells differ considerably in their ability to adsorb citrulline; that protoplasts demonstrate a similar selectivity; and that, throughout various alterations of the growth medium and growth conditions, a consistent difference in citrulline uptake between induced and non-induced cells was present. A proposed explanation based on experimental findings is offered.