TY - DATA T1 - Peptide Storage: Are You Getting the Best Return on Your Investment? Defining Optimal Storage Conditions for Proteomics Samples PY - 2009/07/06 AU - Alexandra Kraut AU - Marlène Marcellin AU - Annie Adrait AU - Lauriane Kuhn AU - Mathilde Louwagie AU - Sylvie Kieffer-Jaquinod AU - Dorothée Lebert AU - Christophe D. Masselon AU - Alain Dupuis AU - Christophe Bruley AU - Michel Jaquinod AU - Jérôme Garin AU - Maighread Gallagher-Gambarelli UR - https://acs.figshare.com/articles/dataset/Peptide_Storage_Are_You_Getting_the_Best_Return_on_Your_Investment_Defining_Optimal_Storage_Conditions_for_Proteomics_Samples/2845789 DO - 10.1021/pr900095u.s005 L4 - https://ndownloader.figshare.com/files/4543528 KW - plastic tubes KW - peptide samples KW - peptide recovery KW - Optimal Storage Conditions KW - glass tubes N2 - To comply with current proteomics guidelines, it is often necessary to analyze the same peptide samples several times. Between analyses, the sample must be stored in such a way as to conserve its intrinsic properties, without losing either peptides or signal intensity. This article describes two studies designed to define the optimal storage conditions for peptide samples between analyses. With the use of a label-free strategy, peptide conservation was compared over a 28-day period in three different recipients: standard plastic tubes, glass tubes, and low-adsorption plastic tubes. The results of this study showed that standard plastic tubes are unsuitable for peptide storage over the period studied. Glass tubes were found to perform better than standard plastic, but optimal peptide recovery was achieved using low-adsorption plastic tubes. The peptides showing poor recovery following storage were mainly hydrophobic in nature. The differences in peptide recovery between glass and low-adsorption plastic tubes were further studied using isotopically labeled proteins. This study allowed accurate comparison of peptide recovery between the two tube types within the same LC-MS run. The results of the label-free study were confirmed. Further, it was possible to demonstrate that peptide recovery in low-adsorption plastic tubes was optimal whatever the peptide concentration stored. ER -