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. 2000 Mar 14;97(7):2974–2978. doi: 10.1073/pnas.050365997

Figure 1.

Figure 1

Absorption spectra of wild-type GFP and the red-shifted mutants S65T, RS-GFP, and EYFP at T = 1.6 K. The maxima of the absorption bands and the 0–0 transitions of the three conformers of wt-GFP are indicated.