VC_0156 MQKSALAIALASLLTPISYLHANEAQPQETVVVTANRFEQKASSTLADVEIITRQDIEQTQAKTLPELLRRLTGVQITQNGGRGQLASLFVRGTSSDQVLVLVDGIRFARAAKGAVDFNQIPLTYVDRIEYVRGARASLYGSEAIGGVINIITKARSQQQGTTVSAGLGSLDYQELSIASGVAIGEKGQMNVALGTESDKGYNVRPVPGVNDGDRHGFRSDNALLGYVHQFDESWSLFANARAYENIYQYDNSYGTRDYKEAEKDDLSFTIGTQYQSERWVSELQLTTQKQKSWDYTQSKGKYSDTSDNLEQRNIQWINRYLVNDVWTFAGGVDWRDESYIDKTADKEFDRSNTAAFAVVAAEWQQWLLEASLRFDDNQEYGSQTTHNIALGYQFIPEFGVKASYGSAFKAPNLYQQYDPSYGNVNLQPEDADSAELSFYGLFSGIKWSITGYDYKINNLIDYNSTTKNYQNVIGESNIKGVEFTAEFATGIVQHQLSVDLKDADDSKGKTLQRRAEHMYKWNALVAFEQVDWSIGYQYVGKRPDLDYNTYPTQNITLDAYSLVDTSVSYYVTDSTTISARIDNLLDKEYETANGYPAAERAYYLNIGYQF Outer membrane cobalamin translocator 611 BTUB_VIBCH Cobalamin receptor Vitamin B12 transporter BtuB btuB Involved in the active translocation of vitamin B12 (cyanocobalamin) across the outer membrane to the periplasmic space. It derives its energy for transport by interacting with the trans-periplasmic membrane protein TonB (By similarity).