3P8U:
reference: Rational design of photoconvertible and biphotochromic fluorescent proteins for advanced microscopy applications., Adam V, Moeyaert B, David CC, Mizuno H, Lelimousin M, Dedecker P, Ando R, Miyawaki A, Michiels J, Engelborghs Y, Hofkens J, Chem Biol. 2011 Oct 28;18(10):1241-51. PMID: 22035793

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