PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 35113558-4 2022 The succinimide intermediate formed during reaction of l-isoAsp-containing peptides with PIMT and S-adenosyl methionine (SAM) is reactive with Tris base and results in a Tris-modified aspartic acid residue with a mass shift of +103 Da. succinimide 4-15 protein-L-isoaspartate (D-aspartate) O-methyltransferase Homo sapiens 89-93