(1) at the very low electron impact energy used (14 eV) these ions do not contribute markedly to the spectra;
(2) a member of the homologous ion series S+ up to S„+.
Amino acid composition of Peptides and Proteins shown in this Atlas
Ala Arg Asn Asp Cys* Gin Glu Gly His lie Leu Lys* Met Phe Pro* Ser Thr Trp Tyr Val A R N DC QEG HIL K MFP S TWYV ^J?
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