Structure and mechanism of the photoactivatable green fluorescent protein.
Henderson, J.N., Gepshtein, R., Heenan, J.R., Kallio, K., Huppert, D., Remington, S.J.(2009) J Am Chem Soc 131: 4176-4177
- PubMed: 19278226 
- DOI: 10.1021/ja808851n
- Primary Citation of Related Structures:  
3GJ1, 3GJ2 - PubMed Abstract: 
Crystal structures of the photoactivatable green fluorescent protein T203H variant (PA-GFP) have been solved in the native and photoactivated states, which under 488 nm illumination are dark and brightly fluorescent, respectively. We demonstrate that photoactivation of PA-GFP is the result of a UV-induced decarboxylation of the Glu222 side chain that shifts the chromophore equilibrium to the anionic form ...