SNN

PCM

Residue type	PCM type	Category	Position	UniProt PTM accession	Entries in PDB
ASN	Succinamide ring	Named protein modification	Amino-acid side chain and backbone (Any position)		125
ASP	Succinamide ring	Named protein modification	Amino-acid side chain and backbone (Any position)		0

251422

PDB entries from 2026-04-01