Figure 1.

Chromophore structures of mTFP1 and its hue-shifted variants. (A) The chromophore structure shared by EGFP, mTFP1 and mWasabi. (B) The chromophore structure shared by ECFP and the mTFP1-Y67W variant. (C) The chromophore structure shared by EBFP and the mTFP1-Y67H variant.