>sp|A8AHA1|BTUD_CITK8 Vitamin B12 import ATP-binding protein BtuD OS=Citrobacter koseri GN=btuD
MISLMQLQDVAETTRLGPLSGDVKPGEILHLVGPNGAGKSTLLARMAGLTFGEGTVIFDG
ASLETWPAAKLAQHRAYLAQQQNPPFSMPVWHFLTLHQPDKTQTNLLNDVAQALGLSDKL
GRSANQLSGGEWQRVRLAAVILQIHPHANPHGQLLLLDEPMNSLDVAQQNALDRLLSQLC
SQGIAIVMSSHDLNHTLRHAHRAWLLKQGKLIASGRRDEVLTPPNLAQAYGMNFRRLDVE
GHRMLISTT