Protein
Glycine betaine/carnitine transport permease protein GbuB
Organism
Listeria monocytogenes serotype 1/2a (strain 10403S)
Function
Part of the ABC transporter complex GbuABC involved in glycine betaine uptake. Responsible for the translocation of the substrate across the membrane. Involved, with BetL and OpuC, in osmoprotection and cryoprotection of Listeria. Can also uptake carnitine when carnitine is abundant in the growth medium.
Similarity
Belongs to the binding-protein-dependent transport system permease family.
Sequence
MPNIPTIPLASWIDKLVDGLTQFEGFFNVITNIIGGIVDAFQWVFDLVPPWLFIILLVFGTFWVNRKGKKWGLIIFEVVGLLLIWNLDFWRDMTQTLTLVLTSSLIALVIGVPLGIWMAKSNIVESIFKPVLDFMQTMPAFVYLIPAVAFFGIGMVPGVVASVIFAMPPTVRMTNLGIRQVSTELVEAADSFGSTPWQKLWKVQLPMAKSTMMAGINQSIMLALSMVVIASMIGAMGLGTRVYFAVGRNDAGGGFVAGIAIVIVAIILDRLTQAFNKKAKSE