>sp|Q57PU4|BTUD_SALCH Vitamin B12 import ATP-binding protein BtuD OS=Salmonella choleraesuis GN=btuD MSQLMQLKDVAESTRLGPLSGEVSAGEILHLVGPNGAGKSTLLARMAGLTSGEGSIRFGG APLEAWATATLAQHRAYLAQQQNPPFAMPVWHYLTLHQPDKTRTGQLNEVADMLGLGDKL GRSVNQLSGGEWQRVRLAAVVLQIHPDANPVGQLLLLDEPMNSLDVAQQNALDRVLHHLC QAGIAIVMSSHDLNHTLRHAHKAWLLKRGKLIACGRREEVLTPSYLAQAYGLRFRRLDVE GHPMLISAT