Fig. 4.

Summary of the top-down LC-MS/MS analysis of the SAX-prefractionated S. islandicus cytosolic sample: A, distributions of the experimental intact protein masses by fraction; B, numbers of protein IDs, identified in each SAX fraction, including a number of the unique IDs, found exclusively in the respective fraction, and nonunique IDs, which were also found in one or more other fractions; C, distribution of the proteoforms found per protein ID; D, distribution of the most frequent types of identified proteoforms. Fl, flow-through fraction.