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1. 1. RSHL & T. Mirzadegan, "Visual Pigments 11. The Shape of a Three-Dimensional Binding Site of Rhodopsin Based on Molecular Modeling Analyses of Isomeric and Other Visual Pigment Analogues," J. Am. Chem. Soc., 110, 8617-8623 (1988).
2. A. E. Asato, X.-Y. Li, D. Mead, G. M. L. Patterson & RSHL, "Azulenic Retinoids and the Corresponding Bacterio-rhodopsin Analogs. Unusually Red-Shifted Pigments," J. Am. Chem. Soc., 112, 7398-7399 (1990).
3. RSHL & Y. Shichida, "Polyenes 28. Protein Directed Regioselective Photoisomerization of the Retinyl Chromophore in Visual Pigment Analogs," in "Photochemistry in Organized and Constrained Media," ed. V. Ramamurthy, VCH Publishers, Inc., N.Y., 817-840, 1991.
4. RSHL, C. W. Liu, X.-Y. Li & A. E. Asato, "Butyl Conformational Reorganization as a Possible Explanation for the Longitudinal Flexibility of the Binding Site of Bacteriorhodopsin. The Azulene and C-22 Retinoid Analogs," Photochem. Photobiol., 54, 625-631 (1991).
5. RSHL, E. Krogh, X.-Y. Li, D. Mead, L. U. Colmenares, J. R. Thiel, J. Ellis, D. Wong & A. E. Asato, "Analyzing the Red-shift Characteristics of Azulenic, Naphthyl, Other Ring-fused and Retinyl Pigment Analogs of Bacteriorhodopsin," Photochem. Photobiol., 58, 701-705 (1993).
6. Y. Zhu & RSHL, "Divergent Pathways in Photobleaching of 7,9-dicis-Rhodopsin and 9,11-dicis-12-Fluororhodopsin: One-Photon-Two-Bond and One-Photon-One-Bond Isomerization," Biochemistry, 32, 10233-10238 (1993).
7. L. U. Colmenares, D. Mead, W. Yoshida, M. Alam & RSHL, "An F NMR Study of Bis(trifluoromethyl)phenyl Bacteriorhodopsin Analogs," J. Phys. Chem., 100, 9172-9174 (1996).
8. J. R. Bell, R. S. Muthyala, R. W. Larsen, M. Alam & RSHL, "Photoactivities of the Red-Shifted Azulenic Bacterio-rhodopsin Analogues," J. Phys. Chem., 102, 5481-5483 (1998).
9. L. U. Colmenares, X-L. Zou, J. Liu, A. E. Asato, RSHL, A. deLera R. Alvarez & RSHL, "11,12-Difluoro-rhodopsin and Related Odd-Numbered Fluororhodopsins. The Use of JF,F for Following a Cis-trans Isomerization Process," J. Am. Chem. Soc., 121, 5803-5804 (1999).
10. H. Imai, T. Hirano, A. Terakita, Y. Shichida, R. S. Muthyala, R.-L. Chen, L. U. Colmenares & RSHL, "Probing for the Threshold Energy for Visual Transduction. Red-shifted Visual Pigment Analogs from 3-Methoxy-3-dehydroretinal and Related Compounds," Photochem. Photobiol., 70, 111-115 (1999).
11. R. Muthyala, D. Watanabe, A. E. Asato & RSH, "The Nature of the Delocalized Cations in Azulenic Bacteriorhodopsin Analogs," Photochem. Photobiol., 74, 837-845 (2001).
12. L. U. Colmenares & RSHL, "Regiospecific Protein Perturbation on F NMR Shifts and Photoisomerization of Fluororhodopsins. An Interpretation Based on Recent Crystal Structures of Rhodopsin," J. Photosci., in press.
