PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8313898-4 1994 When labeled in vivo with [32P]orthophosphate, beta APP was phosphorylated only on serine residues in the N-terminal half of the extracellular domain, resulting in the secretion of phosphorylated soluble beta APP. Phosphate-32P 26-45 amyloid beta precursor protein Homo sapiens 47-55