OntologiesmodclassesMOD:00040   
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2-pyrrolidone-5-carboxylic acid (Gln)
http://purl.obolibrary.org/obo/MOD_00040

A protein modification that effectively converts an L-glutamine residue to 2-pyrrolidone-5-carboxylic acid.

DeltaMass gives a formula C 5 H 5 N 1 O 2 with mass 111.1

Also appears ingexoccoretorexo
Exact Synonyms
(2S)-5-oxo-2-pyrrolidinecarboxylic acid
2-oxopyrrolidine-5-carboxylic acid
2-pyrrolidone-5-carboxylic acid
5-oxoproline
5-oxopyrrolidine-2-carboxylic acid
5-pyrrolidone-2-carboxylic acid
MOD_RES Pyrrolidone carboxylic acid
N-pyrrolidone carboxyl (N terminus)
ntermpeppyroq
PCA
PyrGlu(Gln)
Pyroglutamic Acid formed from Gln
pyroglutamic acid
Pyroglutamyl
Related Synonyms
Gln->pyro-Glu
Pyro-glu from Q