ester crosslinked residues modified L-threonine residue crosslinked residues with loss of water O-glycyl-L-threonine -18.010564804077148438 -18.020000457763671875 157.061309814453125 157.149993896484375 G, T C 6 H 9 N 2 O 3 (2S,3R)-2-amino-3-[(aminoacetyl)oxy]butanoic acid PSI-MOD C-term O-(glycyl)-L-threonine MOD:01586 natural threonine glycinate ester CROSSLNK Glycyl threonine ester (Gly-Thr) (interchain with T-...) O3-(2-aminoacetyl)threonine Cross-link 2. H -2 O -1 A protein modification that effectively crosslinks an L-threonine residue and a glycine residue by an ester bond to form O-glycyl-L-threonine. CROSSLNK Glycyl threonine ester (Thr-Gly) (interchain with G-...) crosslinked glycine residue