pyrrolidone from proline -27.994915008544921875 -28.010000228881835938 69.0578460693359375 69.1100006103515625 C -1 O -1 C 4 H 7 N 1 O 0 MOD:00477 MOD:00794 OBSOLETE because redundant and identical to MOD:00477. Remap to MOD:00477. P PSI-MOD Pro->Pyrrolidone Pyrrolidone from Proline This Unimod entry appears to have come from the same description in PubMed:9252331 as Unimod:360. This entry was not annotated as being approved. Neither difference formula corresponds to the result described in the original citation PubMed:2161657. Unimod:369 artifact true