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Fig. 3 | Zoological Letters

Fig. 3

From: Spectral tuning mediated by helix III in butterfly long wavelength-sensitive visual opsins revealed by heterologous action spectroscopy

Fig. 3

Absorption spectra of purified chimeric mutants of PxRh1 and PxRh3. Absorption spectra of purified chimeric mutants with respect to the transmembrane helix between PxRh1 and PxRh3 WTs, Rh3(I)/Rh1(II-VII) (a), Rh3(I,II)/Rh1(III-VII) (b), Rh3(I-IV)/Rh1(V-VII) (c), Rh3(I-V)/Rh1(VI,VII) (d), Rh3(I-VI)/Rh1(VII) (e). Estimated sensitivity curves calculated using rhodopsin nomogram (grey curve) and their absorption maxima (arrowheads) are also shown. Schematic drawings of seven transmembrane structures of butterfly opsins are also shown, in which helices of PxRh1 and PxRh3 are indicated by green and magenta, respectively

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