(2000). Proceedings of the National Academy of Sciences, 97(22) , 11990-11995. doi: 10.1073/pnas.97.22.11990. Article Pubmed
The red chromophore of DsRed results from the autonomous multi-step post-translational modification of residues Gln66, Tyr67 and Gly68 into an imidazolidinone heterocycle with p-hydroxybenzylidene and acylimine substituents.