10.1021/pr900095u.s001
Alexandra Kraut
Alexandra
Kraut
Marlène Marcellin
Marlène
Marcellin
Annie Adrait
Annie
Adrait
Lauriane Kuhn
Lauriane
Kuhn
Mathilde Louwagie
Mathilde
Louwagie
Sylvie Kieffer-Jaquinod
Sylvie
Kieffer-Jaquinod
Dorothée Lebert
Dorothée
Lebert
Christophe D. Masselon
Christophe D.
Masselon
Alain Dupuis
Alain
Dupuis
Christophe Bruley
Christophe
Bruley
Michel Jaquinod
Michel
Jaquinod
Jérôme Garin
Jérôme
Garin
Maighread Gallagher-Gambarelli
Maighread
Gallagher-Gambarelli
Peptide Storage: Are You Getting the Best Return on Your Investment? Defining Optimal Storage Conditions for Proteomics Samples
American Chemical Society
2009
plastic tubes
peptide samples
peptide recovery
Optimal Storage Conditions
glass tubes
2009-07-06 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Peptide_Storage_Are_You_Getting_the_Best_Return_on_Your_Investment_Defining_Optimal_Storage_Conditions_for_Proteomics_Samples/2845780
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.