Table II.

Common Modifications. Modifications commonly found in multimer ligands standardized using PSI-MOD terminology.

PSI-MOD label	Synonym	PSI-MOD ID
amidated residue	Amidation, AMID	MOD:00674
2-pyrrolidone-5-carboxylic acid (Glu)	Pyrrolidone carboxylic acid, PYRE, PCA, pyroglutamic acid	MOD:00420
9-fluorenylmethyloxycarbonyl (Fmoc)	Fluorenylmethyloxycarbonyl, FMOC	MOD:01109
acetylated residue	Acetylation, ACET, AcRes, Acetyl	MOD:02078
biotinylated residue	Biotin, BIOT, BtnRes, Biotinylation	MOD:01885
cysteinylation (disulfide with free L-cysteine)	Cysteinylation, CYSTL, SCysCys	MOD:00765
deamidated and methyl esterified residue	Deamidation followed by a methylation, DEAME	MOD:01369
deamidated residue	Deamidation, DEAM, dNRes, Deamidated	MOD:00400
dehydrated residue	Dehydration, DEHY, Dehydrated	MOD:00704
formylated residue	Formylation, FORM, FoRes, Formyl	MOD:00493
galactosylated residue	Galactosylation, GAL, GalRes	MOD:00728
glucosylated residue	Glucosylation, GLUC, GlcRes, Glycation	MOD:00726
glycosylated residue	Glycosylation, GLYC, GlycoRes	MOD:00693
hydroxylated residue	Hydroxylation, HYL, HyRes	MOD:00677
L-2-aminobutanoic acid (Glu)	L-2-Aminobutyric acid, Abu	MOD:00819
L-citrulline	Citrullination, CITR, Cit, Deamidated	MOD:00219
methylated residue	Methylation, METH, METH, MeRes	MOD:00427
myristoylated residue	Myristoylation, MYRI, MYRI, MyrRes	MOD:00438
mono N-acetylated residue	N-acetylation, NAc, NAcRes, N-Acetyl	MOD:00408
oxidized residue	Oxidation, OX, OxRes	MOD:00675
palmitoylated residue	Palmitoylation|PALM, PALM, PamRes, Palmitoyl	MOD:00440
phosphorylated residue	Phosphorylation, PHOS, PhosRes, Phospho	MOD:00696
reduced residue	Reduction, RED, RedRes	MOD:01472
sulfated residue	Sulfation, SULF, SulfRes, Sulfo	MOD:00695
other	OTH