PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2015887-2 1991 Single substitution Met162----Ala and double substitutions Leu159.166----Val resulted in a significant decrease of IL-6 activity in the production of immunoglobulin (Ig) from B-cells. Valine 70-76 interleukin 6 Homo sapiens 115-119