This data set was submitted to GPM anonymously on February 2nd, 2005. The data can be found here.
The proteins discovered show a strong bias towards nuclear and mitochondrial proteins. Other proteins commonly found in membrane-bound organelles are also enriched, but to a lesser extent. The distribution suggests that this experiment was an attempt to analyze a nuclear fraction, probably obtained from a centrifugation fraction. A large fraction of cytoplasmic proteins are also present in this model. Evidence of ER and Golgi specific markers suggests that this fraction contained a significant amount of microsomal membranes.
The data is of high quality.