This method operates via a deliberately designed catalyst-free tandem reductive amination/cyclization cascade event triggered by a transfer hydrogenation process with easily available Hantzsch ester as the organic hydride source.
Subsequent analysis of the mixtures of purified proteins by both gel-free tandem mass spectrometry and gel-based MALDI-ToF mass spectrometry were performed essentially as previously described [27].
These data were independently confirmed by highly-sensitive gel-free tandem mass spectrometry-based peptide shotgun sequencing (LC-MS/MS) of an aliquot of each protein mixture after in solution digestion with trypsin (http://tap.med.utoronto.ca/).utoronto.ca/
By contrast, Kislinger et al. [ 106] used large scale gel-free tandem mass spectrometry to monitor global proteome alterations throughout the myogenic differentiation program in C2C12 cells.
Purified protein preparations were analyzed both by gel-free tandem mass spectrometry and by gel electrophoresis in conjunction with matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry [ 37].
In this study, we report a gel-free tandem mass tags- (TMT-) labeling based proteomic analysis of five placental villous tissues from patients with early pregnancy loss and five from normal pregnant women.
For example, it was applied to analyze tag count data derived from the Serial Analysis of Gene Expression (SAGE) [ 40]; tag count data obtained from Digital Gene Expression profiling [ 41]; and spectral count data generated from label-free tandem mass spectrometry-based proteomic experiments [ 42].
Among the 33,290 sequences obtained, a total of 201 sequences longer than 80 bp, containing microsatellite motifs with at least seven uninterrupted repeats and flanking regions free of tandem repetitions, were used to design PCR primer pairs.
Using strong cation exchange chromatography, followed by label-free quantitative tandem mass spectrometry, we characterized the proteomes of pooled skin samples.
Glycopeptide capture was used in this study to selectively isolate and quantify N-linked glycopeptides from tumours mixtures and the captured glycopeptides were subjected to label-free quantitative tandem mass spectrometry analysis.
In silico microsatellite mining and primer design were performed on the date palm genome draft sequence version 2 (Al-Dous et al., 2011), with the Perl script SSR_pipeline-v2.pl (Poncet et al., 2006), which incorporates three free software programs: Tandem Repeats Finder (Benson, 1999), Primer3 (Rozen and Skaletsky, 2000), and BLAST (Altschul et al., 1990).
