Figure 1. Peptide recovery after SDS removal.
A Shewanella whole cell lysate was digested by the urea digestion protocol and peptides were cleaned up by C-18 SPE column before use. 20 μg of peptides were used in each experiment. A, peptide recovery after treatment with 2M KCl, 1% SDS, or 1% SDS followed by SDS removal via KDS precipitation. B, peptide recovery after SDS removal and C-18 SPE clean up. C, peptide recovery from different available SDS removal protocols. All data were summarized from triplicates. #, below the detect limitation.