Fig. 4

Quantitative analysis of the NADH dehydrogenase 1 alpha subcomplex subunit 2 (NDUA2, Q9CQ75) protein. (A-B) Isotopic distribution and fragment map of the identified proteoforms. (C) Box and whisker plots demonstrating the abundance of each proteoform in young and old mouse samples. (C) The ratio between different proteoforms in young and old mouse samples