THE METHOXYMETHYL CATION CLEAVES PEPTIDE BONDS IN THE GAS PHASE
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Methoxymethyl cations and simple N-acyl amino acids and
dipeptides react in the gas phase to form [M +
MeOCH
2
]
+
ions which fragment via a number
of pathways including amide bond cleavage.
[1] Michael A. Freitas,et al. Gas-phase reactions of glycine, alanine, valine and their N-methyl derivatives with the nitrosonium ion, NO+. , 1996, Journal of mass spectrometry : JMS.
[2] Michael A. Freitas,et al. Concerning the Regioselectivity of Gas Phase Reactions of Glycine with Electrophiles. The Cases of the Dimethylchlorinium Ion and the Methoxymethyl Cation , 1995 .
[3] K. Biemann,et al. Amino Acid Sequencing of Proteins , 1994 .