A1dafa7e-3caf-42e3-9f2e-3d23c34fba97 - samples
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ABSTRACT:
PROVIDER: EGAD00001006740 | EGA |
REPOSITORIES: EGA
Similar Datasets
Project description:Previously, we published a dataset of human blood plasma and serum samples of 10 healthy males and 10 healthy females, fractionated on a set of sorbents (cation exchange Toyopearl CM-650M, CM Bio-Gel A, SP Sephadex C-25 and anion exchange QAE Sephadex A-25) and analyzed by LC-MS/MS individually and pooled in equal amounts (Supplementary Table S1, Sheet 1) [33]. The mass spectrometry peptidomics data was deposited to the ProteomeXchange Consortium via the PRIDE partner repository (dataset identifiers PXD008141 and 10.6019/PXD008141). Direct download link: http://www.ebi.ac.uk/pride/archive/projects/PXD008141. We analyzed this dataset again within this work. The detailed information about the dataset of blood plasma/serum samples of 20 healthy donors fractionated on a set of sorbents is available in the original paper [33], including the clinical parameters of the donors, sample collection, plasma/serum fractionation, peptide extraction and LC-MS/MS analysis. 33. Arapidi, G. et al. Peptidomics dataset: Blood plasma and serum samples of healthy donors fractionated on a set of chromatography sorbents. Data Brief 18, 1204–1211 (2018).
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Project description:Previously, we published a dataset of human blood plasma and serum samples of 10 healthy males and 10 healthy females, fractionated on a set of sorbents (cation exchange Toyopearl CM-650M, CM Bio-Gel A, SP Sephadex C-25 and anion exchange QAE Sephadex A-25) and analyzed by LC-MS/MS individually and pooled in equal amounts (Supplementary Table S1, Sheet 1) [33]. We focused on those peptides that could be found in the blood plasma and serum using a standard search against the database of human proteins (UniProt Knowledgebase, taxon human). The combination of search engines MASCOT and X! Tandem, based on Scaffold 4 software with FDR less than 1%, allowed us to identify 15,530 unique peptides that belong to 2,127 protein groups (Table 1, Supplementary Table S1, Sheets 2 and 3). The Venn diagram shows that slightly less than 40% of the peptides are found in all four analyzed samples (Figures 1A and 1B). About 70% of the peptides are found in at least two samples. The accumulation diagram (Figure 1C) shows that the number of new unique peptides does not reach a plateau after repeated analyses of the same plasma sample — even after six runs. The high variability of the plasma and serum peptidome most likely indicates its sophisticated composition. 33. Arapidi, G. et al. Peptidomics dataset: Blood plasma and serum samples of healthy donors fractionated on a set of chromatography sorbents. Data Brief 18, 1204–1211 (2018).
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