Comparison between procedures using SDS for shotgun proteomic analyses of complex samples.
Comparison between procedures using SDS for shotgun proteomic analyses of complex samples.
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DOI:
10.1002/pmic.201100045
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发表时间:
2011-07
期刊:
影响因子:
3.4
通讯作者:
MacCoss, Michael J.
中科院分区:
文献类型:
--
作者:
Bereman, Michael S.;Egertson, Jarrett D.;MacCoss, Michael J.
关键词:
Filter aided sample preparation (FASP) and a new sample preparation method using a modified commercial SDS removal spin column are quantitatively compared in terms of their performance for shotgun proteomic experiments in three complex proteomic samples: a Saccharomyces cerevisiae lysate (insoluble fraction), a Caenorhabditis elegans lysate (soluble fraction), and a human embryonic kidney cell line (HEK293T). The characteristics and total number of peptides and proteins identified are compared between the two procedures. The SDS spin column procedure affords a conservative 4-fold improvement in throughput, is more reproducible, less expensive (i.e., requires less materials), and identifies between 30–107% more peptides at a q≤0.01, than the FASP procedure. The peptides identified by SDS spin column are more hydrophobic than species identified by the FASP procedure as indicated by the distribution of GRAVY scores. Ultimately, these improvements correlate to as great as a 50% increase in protein identifications with 2 or more peptides.
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