PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8448358-3 1993 Amino acid sequencing of the purified protein showed that AP24 is synthesized as a preproprotein from which an amino-terminal signal peptide and a carboxyl-terminal propeptide (CTPP) are cleaved off during post-translational processing. propeptide 165-175 osmotin Nicotiana tabacum 58-62