Light-driven post-translational installation of reactive protein side chains by Josephson, B, Fehl, C, Isenegger, PG, Nadal, S, Wright, TH, Poh, AWJ, Bower, BJ, Giltrap, AM, Chen, L, Batchelor-McAuley, C, Roper, G, Arisa, O, Sap, JBI, Kawamura, A, Baldwin, AJ, Mohammed, S, Compton, RG, Gouverneur, V, Davis, BG