PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8429002-2 1993 The topology of DmsC has been studied using phoA (alkaline phosphatase) and blaM (beta-lactamase) gene fusions. doxycycline fosfatex 16-20 beta-lactamase Escherichia coli 82-96