(2-aminosuccinimidyl)acetic acid 154.037841796875 154.1199951171875 97.01638031005859375 97.06999969482421875 C 6 H 6 N 2 O 3 Cross-link 2; this cross-link is formed by the condensation of an aspartic acid residue or an asparagine residue with the alpha-amido of the following residue. G, X C 4 H 3 N 1 O 2 A protein modification that forms (2-aminosuccinimidyl)acetic acid by crosslinking either an aspartic acid residue or an asparagine residue with the following glycine residue. hypothetical MOD:01628 PSI-MOD none 2-aminosuccinimide ring crosslinked residues crosslinked glycine residue