(2020). Proceedings of the National Academy of Sciences, 117(51) , 32395-32401. doi: 10.1073/pnas.2017379117. Article Pubmed
In EGFP, the direction of the transition dipole moment is 14° from the line connecting the centers of the aromatic rings.
In mTurquoise2, the direction of the transition dipole moment is 4° from the line connecting the centers of the aromatic rings.
In mCherry, the direction of the transition dipole moment (the 'molecular antenna') is -8° from the line connecting the centers of the aromatic rings.