monoadenosine diphosphoribosyl (ADP-ribosyl) modified residue modified L-glutamine residue N5-(ADP-ribosyl)-L-glutamine (S)-2-amino-4-([adenosine 5'-(trihydrogen diphosphate) 5'->5'-ester with alpha-D-ribofuranosyl]amino)-5-oxopentanoic acid 541.06109619140625 541.29998779296875 669.11968994140625 669.42999267578125 A protein modification that effectively converts an L-glutamine residue to N5-(ADP-ribosyl)-L-glutamine. C 15 H 21 N 5 O 13 P 2 C 20 H 29 N 7 O 15 P 2 MOD:01662 N5-(ADP-ribosyl)-L-glutamine N5-[alpha-D-ribofuranoside 5'->5'-ester with adenosine 5'-(trihydrogen diphosphate)]-L-glutamine N5-alpha-D-ribofuranosyl-L-glutamine 5'->5'-ester with adenosine 5'-(trihydrogen diphosphate) PSI-MOD Q natural