PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1702515-1 1991 The A2 vitellogenin gene of Xenopus laevis, which is expressed liver specifically, contains an A-activator-binding site (AABS) that mediates high in vitro transcriptional activity in rat liver nuclear extracts. aabs 121-125 a1-a Xenopus laevis 7-19 1702515-7 1991 In vitro transcription experiments revealed that AABS was present not only in the closely related Xenopus A1 vitellogenin gene but also in acute-phase genes as a liver-specific regulatory element known to confer the interleukin-6 response. aabs 49-53 a1-a Xenopus laevis 109-121