Involved in a high affinity multicomponent binding-protein-dependent transport system for choline. Probably responsible for energy coupling to the transport system. Repressed by GbsR. LH45 is not a natural strain. It has been constructed by transformation of strain 168 with linear DNA from B.subtilis ATCC 6633. It is a subtilin-producing mutant of B.subtilis 168 (PubMed:7592481). Belongs to the ABC transporter superfamily.