Fig. 5.

Analysis of the average number of spectral counts observed per unique peptide identification. Data are expressed as the average spectral counts/peptide for each subunit of RNA polymerase II as indicated. These data are representative of the three biological replicates although only data from biological replicate 1 of Rpb3-TAP are shown. At the top of the graph, the maximum number of spectral counts observed for a unique peptide (Maximum), the total number of proteotypic peptides (Proteotyptic), and the total number of amino acids (Total Length) for each subunit is indicated.