Sample preparation and digestion for proteomic analyses using spin filters.

  title={Sample preparation and digestion for proteomic analyses using spin filters.},
  author={Linda L Manza and Sheryl L Stamer and Amy-Joan L. Ham and Simona G. Codreanu and Daniel C. Liebler},
  volume={5 7},
We describe the use of commercially available microcentrifugation devices (spin filters) for cleanup and digestion of protein samples for mass spectrometry analyses. The protein sample is added to the upper chamber of a spin filter with a > or = 3000 molecular weight cutoff membrane and then washed prior to resuspension in ammonium bicarbonate. The protein is then reduced, alkylated, and digested with trypsin in the upper chamber and the peptides are recovered by centrifugation through the… CONTINUE READING
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