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High-resolution MS identifies >4,300 SUMOylation sites in >1,600 proteins in human cells under standard growth conditions and after proteasome inhibition or heat shock. The data reveal cross-talk between SUMO and other post-translational modifications.
A randomized RNA library is used to determine the specificities of RNA recognition by PUF repeats. The code is then used to design a protein that targets endogenous human cyclin B1 mRNA and activates its translation.