PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1633607-0 1992 Spacer-modified, photolabile tetrasaccharides as analogues of maltopentaose are versatile probes for porcine pancreatic alpha-amylase. tetrasaccharides 29-45 amylase alpha 2A Homo sapiens 109-133