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. Author manuscript; available in PMC: 2012 Apr 6.
Published in final edited form as: J Am Chem Soc. 2011 Mar 10;133(13):4734–4737. doi: 10.1021/ja200322w

Figure 2.

Figure 2

Dihedral angle deviations (top) along the conjugated carbon chain of the retinal backbone atoms of bovine (bottom) and squid (top) rhodopsins. The deviations are from either cis (0°) or the trans (180°) configuration. Refer text for abbreviations. Values in parentheses indicate the bond length alternation of the chromophores discussed in this study. PSBT-X-ray in blue refers to the 2.6 Å X-ray structure of bovine bathorhodopsin (PDB code: 2G87)