Escherichia coli - 210326, 210327, 210328, 210329, 210330, 667642, 685614, 685616, 713095, 713485, 713505, 719509, 719930, 734003, 734281, 734760, 734771 Escherichia coli BtuD; gene btuD 697950 Escherichia coli encoded by btuD gene 690056 Escherichia coli encoded by btuD gene; K12 685626 Escherichia coli genes btuC, btuD, and btuF encoding for vitamin B12 import system permease protein BtuC, vitamin B12 import ATP-binding protein BtuD, and vitamin B12-binding protein BtuF 750063, 751644, 751661, 751956, 752215, 752221 Escherichia coli permease protein BtuC 719987 Escherichia coli strain K12 685066, 685135 Escherichia coli subunit BtuD 720849 Haemophilus influenzae - 696776 Homo sapiens - 749821, 752200 Lactobacillus delbrueckii subsp. bulgaricus - 750412 Lactobacillus delbrueckii subsp. bulgaricus ATCC 11842 - 750412 Lactobacillus delbrueckii subsp. bulgaricus DSM 20081 - 750412 Lactobacillus delbrueckii subsp. bulgaricus JCM 1002 - 750412 Lactobacillus delbrueckii subsp. bulgaricus NBRC 13953 - 750412 Lactobacillus delbrueckii subsp. bulgaricus NCIMB 11778 - 750412 Mycobacterium tuberculosis - 734820 Salmonella enterica subsp. enterica serovar Typhimurium - 210331 Thiobacillus denitrificans - 751670 Vibrio cholerae serotype O1 genes btuC, btuD, and btuF encoding for vitamin B12 import system permease protein BtuC, vitamin B12 import ATP-binding protein BtuD, and vitamin B12-binding protein BtuF 749978 Vibrio cholerae serotype O1 ATCC 39541 genes btuC, btuD, and btuF encoding for vitamin B12 import system permease protein BtuC, vitamin B12 import ATP-binding protein BtuD, and vitamin B12-binding protein BtuF 749978 Vibrio cholerae serotype O1 Classical Ogawa 395 genes btuC, btuD, and btuF encoding for vitamin B12 import system permease protein BtuC, vitamin B12 import ATP-binding protein BtuD, and vitamin B12-binding protein BtuF 749978 Vibrio cholerae serotype O1 O395 genes btuC, btuD, and btuF encoding for vitamin B12 import system permease protein BtuC, vitamin B12 import ATP-binding protein BtuD, and vitamin B12-binding protein BtuF 749978