PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 16275338-0 2005 Purification and analysis of recombinant 11S activators of the 20S proteasome: Trypanosoma brucei PA26 and human PA28 alpha, PA28 beta, and PA28 gamma. 5-chloroindole 41-44 proteasome activator subunit 2 Homo sapiens 125-134