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- W2041871569 abstract "In-gel digestion is an attractive route in mass spectrometry-based proteomic analysis, which, however, often suffers from a certain amount of sample loss mainly due to insufficient protein digestion and peptide extraction. To address this, herein we establish a partially degradable gel-assisted protein digestion and peptide recovery method by means of a simple replacement of bis-acrylamide (BA) with bis-acrylylcystamine (BAC). Concretely, the protein sample solubilized using high concentrations of sodium dodecyl sulfate (SDS) and urea were directly entrapped and immobilized into BAC-crosslinked gel by vacuum-dried gel absorption followed by fixation treatment. After removal of SDS and urea by repeated washing, the proteins were subjected to in-gel digestion and the gel was reductively treated. The tryptic peptides were recovered from the partial degradation of the gel and analyzed afterwards by capillary liquid chromatography coupled with tandem mass spectrometry (CapLC-MS/MS). Compared with conventional BA-crosslinked gel method, this new method increased the numbers of identified proteins and unique peptides by 20.2% and 20.4%, respectively. The further statistical analysis demonstrated that the method improved the recovery of tryptic peptides particularly larger and/or hydrophobic peptides, thereby significantly facilitating protein identification. Thus, the newly developed method is a promising alternative for BA-crosslinked gel-based shotgun workflows and has potential application in the related fields of protein chemistry and proteomics." @default.
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- W2041871569 date "2011-10-01" @default.
- W2041871569 modified "2023-10-14" @default.
- W2041871569 title "Preparation and application of a partially degradable gel in mass spectrometry-based proteomic analysis" @default.
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- W2041871569 doi "https://doi.org/10.1016/j.jchromb.2011.08.017" @default.
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