PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23877406-3 2013 recently identified RAS-MAPK-MSK1 as a cellular pathway that modulates levels of the polyglutamine-containing protein ATXN1 and its subsequent toxicity in SCA1. polyglutamine 85-98 ribosomal protein S6 kinase A5 Homo sapiens 29-33