title: Fast-atom-bombardment mass spectra of enkephalins.
abstract: The positive- and negative-ion mass spectra of [methionine]enkephalin and [leucine]enkephalin have been obtained by using a fast-atom-bombardment source described previously by Barber, Bordoli, Sedgwick & Tyler [(1981) J. Chem. Soc. Chem. Commun., in the press]. This technique has allowed the spectra to be obtained without conversion of the enkephalins into volatile derivatives. The fast-atom-bombardment spectra show good pseudo-molecular-ion sensitivity and fragmentation that can be interpreted on the basis of the known molecular structure.
mesh_terms: D000838:Anions; D002412:Cations; D004723:Endorphins; D004743:Enkephalin, Leucine; D004744:Enkephalin, Methionine; D004745:Enkephalins; D013058:Mass Spectrometry
chemical_list: D000838:Anions; D002412:Cations; D004723:Endorphins; D004745:Enkephalins; D004744:Enkephalin, Methionine; D004743:Enkephalin, Leucine