Oligopeptides subjected to partial enzyme hydrolysis provide mixtures of sub-peptides which optimize amino acid sequence determination by fast atom bombardment mass spectrometry. The digestion mixture can be sampled directly; there is no interference from the enzyme. Complete sequences were obtained
The use of signal averaging techniques for the quantitation and mass measurement of high molecular weight compounds using fast atom bombardment mass spectrometry
β Scribed by L. Grotjahn; L. C. E. Taylor
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 346 KB
- Volume
- 20
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
The measurement and recording of peak signals at high mass is often ditlicult and susceptible to a large degree of error. Signal averaging of repetitive scans has been used to improve detection limits and aid nominal mass assignment by peak matching. This is illustrated using glucagon as the reference material to determine the mass of the [MH]+ peak in the molecular ion cluster of Vasoactive Intestinal Peptide, and caesium iodide as reference to mass-measure a 13-unit oligonucleotide.
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