>4dbl_C mol:protein length:249 Vitamin B12 import ATP-binding protein BtuD MSIVMQLQDVAESTRLGPLSGEVRAGEILHLVGPNGAGKSTLLARMAGMTSGKGSIQFA GQPLEAWSATKLALHRAYLSQQQTPPFATPVWHYLTLHQHDKTRTELLNDVAGALALDD KLGRSTNQLSGGEWQRVRLAAVVLQITPQANPAGQLLLLDQPMNSLDVAQQSALDKILS ALSQQGLAIVMSSHDLNHTLRHAHRAWLLKGGKMLASGRREEVLTPPNLAQAYGMNFRR LDIEGHRMLISTI