This data set was searched against the M. musculus proteome on March 21st, 2006. It was anonymously donated the the GPMDB. The data can be found here.
No experimental details were supplied with the data. The instrument used was most likely a ThermoFinnegan LTQ. The sample was digested with porcine trypsin, with urea in the digestion mixture. No attempt was made to find phosphorylated peptides.
The unusually large signals from lysosome-specific proteins suggest the sample was prepared by centrifugation, with mitochondrial and microsomal contaminants. Of the top ten proteins listed (excluding albumin), all are the best exemplars for those proteins in GPMDB (as of 12/29/2007).
No other data set in GPMDB has such a well isolated set of mouse lysosomal proteins.