Figure 1.
Proteomics approach for SUMO site detection
(A) Diagram of the peptides generated after trypsin digestion of proteins modified by wild-type and T > R mutant SUMO.
(B) Diagram of the experimental design and work flow for SUMOylation-derived diGly-modified peptide MS analysis.
(C) Diagram of the recombinant SUMO construct used to generate SUMO-TR expressing transgenic flies.
(D) Western blot of total ovary lysate confirming the expression of recombinant SUMO. Ovaries from flies overexpressing 6xHis-FLAG-tagged SUMO are used as a positive control.