✍ Scribed by Dr. Jörg W. Metzger
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This paper describes experience with the commercially available LCQ quadrupole ion trap mass spectrometer applied to the o †-line analysis of peptides and proteins. The standard front end of the electrospray probe was replaced with a micromanipulator which, with the aid of a magnifying device, allow
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
We report the application of nanoelectrospray ionization tandem mass spectrometry (nES-MS/MS) and capillary LC/microelectrospray MS/MS (cLC/&mgrES-MS/MS) for sequencing sulfonic acid derivatized tryptic peptides. These derivatives were specifically prepared to facilitate low-energy charge-site-initi