Fast-atom-bombardment mass spectra of enkephalins
نویسندگان
چکیده
منابع مشابه
Fast - atom - bombardment mass spectrometry
A detailed study of the mass spectra of peptides produced by the new technique of fast-atom bombardment is reported. Molecular weights of unmodified peptides containing up to 21 amino acids have been determined. In favourable cases, the molecular-weight determination may be made on as little as 0.1 nmol of sample. Positive-ion and negative-ion spectra are obtained with equal facility. With samp...
متن کاملFAST ATOM BOMBARDMENT MASS SPECTROMETRY (FABMS) ANALYSIS OF AN N- TERMINAL - BLOCKED PEPTIDE
FABMS analysis of T-lb peptide before and after one cycle of Edman degradation indicated an unblocked N-terminal Thr residue for this tryptic peptide. In contrast , our data showed a molecular protonated ion, MH + for T- la peptide at 655 mass units (mu) which is 42 mu higher than the MH ion of T- 1b peptide. In addition, T- la peptide was not amenable to one cycle of manual Edman degrada...
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The continuous-flow fast atom bombardment probe performs equally well with or without a high-performance liquid chromatography column producing clean spectra containing little or no background noise. Its function as a liquid chromatography-mass spectrometry interface for labile and involatile samples has been illustrated with reference to dansylated amino acids. The versatility of the new probe...
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The technique of fast atom bombardment mass spectrometry has been shown to be capable of producing molecular weight and useful fragmentation information from a selection of penicilloic acids. In addition, the technique has been shown to give similar information on alkali metal salts of penicilloic acids.
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14. Barber, M., Bordoli, R. S., Sedgwick, R. D. & ‘lylcr, A. N . ( 198 I ) J. Chem. Soc. Chem. Commirri. 7,325-327 Biemann, K. & Martin, S. A. ( 1 987) Moss Spectrom. Rev. 6 , 1-76 Gibson, B. W. & Biemann, K. (1984) /’roc. Nor/. Aciid. Sci. U.S.A. 8 I , 1956I960 Allmaier, G., Chao, B. H., Khorana, H. G. & Biemann, K. ( 1986) in Annual Conference on Moss Spectrometty w i r l Allied Topics 34h, p...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1981
ISSN: 0264-6021
DOI: 10.1042/bj1970401