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Peptide based diagnostics: Are random-sequence peptides more useful than tiling proteome sequences?
Journal of Immunological Methods, 2015Diagnostics using peptide ligands have been available for decades. However, their adoption in diagnostics has been limited, not because of poor sensitivity but in many cases due to diminished specificity. Numerous reports suggest that protein-based rather than peptide-based disease detection is more specific.
Krupa Arun Navalkar +2 more
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2003
The advent of new analyzer systems based on Fourier-transform ion cyclotron resonance (FT-ICR) and quadropole time-of-flight (Q-TOF) technologies allows protein digests to be analyzed under high-resolution conditions, resulting in mass spectometry (MS) and tandem MS (MS/MS) peptide mass spectra characterized by a resolution of 10,000 [full width half ...
Andreas Schlosser, Wolf D. Lehmann
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The advent of new analyzer systems based on Fourier-transform ion cyclotron resonance (FT-ICR) and quadropole time-of-flight (Q-TOF) technologies allows protein digests to be analyzed under high-resolution conditions, resulting in mass spectometry (MS) and tandem MS (MS/MS) peptide mass spectra characterized by a resolution of 10,000 [full width half ...
Andreas Schlosser, Wolf D. Lehmann
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Database of biologically active peptide sequences
Nahrung/Food, 1999Proteins are sources of many peptides with diverse biological activity. Such peptides are considered as valuable components of foods with desired and designed biological activity. Two strategies are currently recommended for research in the area of biological activity of food protein fragments.
J, Dziuba +3 more
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2005
In mass spectrometry (MS)-based protein studies, peptide fragmentation analysis (i.e., MS/MS experiments such as matrix-assisted laser desorption ionization [MALDI]-post-source decay [PSD] analysis, collision-induced dissociation [CID] of electrospray- and MALDI-generated ions, and electron-capture and electron-transfer dissociation analysis of ...
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In mass spectrometry (MS)-based protein studies, peptide fragmentation analysis (i.e., MS/MS experiments such as matrix-assisted laser desorption ionization [MALDI]-post-source decay [PSD] analysis, collision-induced dissociation [CID] of electrospray- and MALDI-generated ions, and electron-capture and electron-transfer dissociation analysis of ...
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Rapid sequence analysis of small peptides
Analytical Biochemistry, 1970Abstract Small amounts of peptide material can be analyzed by a modified sequential degradation plus dansylation procedure. The method requires about 5 nanomoles per step, and is primarily designed for application to peptides of up to five or six residues.
W R, Gray, J F, Smith
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Microfluidic Superheating for Peptide Sequence Elucidation
Analytical Chemistry, 2015Herein, we introduce microfluidic superheating as a new method for peptide fragmentation prior to mass spectrometric analysis. The superheating conditions were found to be stable up to 240 °C for more than 30 min without elevated pressure or boiling of the aqueous sample. As proof of principle, we exposed the peptides ACTH1-10 and OVA257-264 to various
Matthias O, Altmeyer +2 more
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Infrared spectroscopy of ‘forbidden’ peptide sequences
Physical Chemistry Chemical Physics, 2009Certain pentapeptide sequences are absent from all known universal protein primary structures, even though they are found in the non-coding regions of DNA. These 'forbidden' sequences may have been rejected by evolution because they disrupt the formation of functional secondary protein structures. The uncapped pentapeptides FFMCT and WCFNL, which model
Timothy D, Vaden +2 more
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Polypeptide Helices in Hybrid Peptide Sequences
Journal of the American Chemical Society, 2005A new class of polypeptide helices in hybrid sequences containing alpha-, beta-, and gamma-residues is described. The molecular conformations in crystals determined for the synthetic peptides Boc-Leu-Phe-Val-Aib-betaPhe-Leu-Phe-Val-OMe 1 (betaPhe: (S)-beta3-homophenylalanine) and Boc-Aib-Gpn-Aib-Gpn-OMe 2(Gpn: 1-(aminomethyl)cyclohexaneacetic acid ...
Ananda, Kuppanna +5 more
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1991
For a recent American Society for Mass Spectrometry (ASMS) peptide sequencing workshop, some forty laboratories requested a sample of two unknown peptides. We chose to analyse a 1.5 μg sample with a stated mass of ~ 1800 u, and were the only laboratory to submit results on this peptide at the 1990 ASMS conference in Tucuon, Arizona.
N. Poppe-Schriemer +7 more
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For a recent American Society for Mass Spectrometry (ASMS) peptide sequencing workshop, some forty laboratories requested a sample of two unknown peptides. We chose to analyse a 1.5 μg sample with a stated mass of ~ 1800 u, and were the only laboratory to submit results on this peptide at the 1990 ASMS conference in Tucuon, Arizona.
N. Poppe-Schriemer +7 more
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Matching Peptide Sequences with Mass Spectra
2005We study a method of mapping both mass spectra and sequences to feature vectors and the correlation between them. The method of calculating the feature vector from mass spectra is presented, together with a method for representing sequences. A correlation metric comparing both representations is studied.
Lau, K. W. +3 more
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