PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26597768-4 2015 Classically the alphavirus nsP2 protease is thought to be papain-like with the enzyme reaction proceeding through a cysteine/histidine catalytic dyad. Cysteine 116-124 reticulon 2 Homo sapiens 27-31