Specific and covalent targeting of conjugating and deconjugating enzymes of ubiquitin-like proteins by Hemelaar, J, Borodovsky, A, Kessler, BM, Reverter, D, Cook, J, Kolli, N, Gan-Erdene, T, Wilkinson, KD, Gill, G, Lima, CD, Ploegh, HL, Ovaa, H