
%0 Journal Article
%A Waugh, RJ 
%A Bowie, JH 
%A Gross, ML 
%T Collision-Induced Dissociations of Deprotonated Peptides. Dipeptides Containing Asn, Arg and Lys
%J Australian Journal of Chemistry
%D 1993/05/01
%V 46
%N 5
%P 693-702
%K 
%R https://doi.org/10.1071/CH9930693
%U https://www.publish.csiro.au/paper/CH9930693 
%X The presence and position of Asn, Arg and Lys residues in dipeptides may be determined from a consideration of the collisional activation mass spectra of the (M-H)- ions formed by fast atom bombardment. All spectra show the basic dipeptide cleavage, i.e. NH2CH(R1)CONHCH(R2)CO2- &#8594; NH2C(R1)CONHCH(R2)CO2H &#8594; NH2C(R1)=C=O + -NHCH(R2)CO2H. There are a number of fragmentations characteristic of a particular &#945; side chain: for example, Arg loses HN=C=NH (42 u). 
