Explanation
A bar chart displaying the percentage of protein identifications in the whole experiment according to the total number of peptides used to report the identification. Proteins supported by more peptide identifications can constitute more confident results.
Note: To investigate further, in the Protein view, one can sort the proteins by number of peptide identifications.

In this experiment 50% of the proteins were identified through one peptide only. The rest of the protein identifications, especially the ones with higher peptide numbers can be considered more reliable identifications.