>sp|A1ABP5|BTUD_ECOK1 Vitamin B12 import ATP-binding protein BtuD OS=Escherichia coli O1:K1 / APEC GN=btuD MSIVMQLQDVAESTRLGPLSGEVRAGEILHLVGPNGAGKSTLLARMAGMTSGKGSIQFAG QPLEAWSATKLALHRAYLSQQQTPPFAMPVWHYLTLHQHDKTRTELLNDVAGALALDDKL GRSTNQLSGGEWQRVRLAAVVLQITPQANPAGQLLLLDEPMNSLDVAQQSALDKILSALC QQGLAIVMSSHDLNHTLRHAHRAWLLKGGKMLASGRREEVLTPANLAQAYGMNFRRLDIE GHRMLISTI