Abstract
Retinal analogues in which the 13-methyl group is replaced by H, C2H5, CF3, and OCH3 residues are studied by means of quantumchemical modified neglect of diatomic overlap-correlated version (MNDOC) calculations. The analogues are suitable to test the stereochemical mechanism of proton pumping in bacteriorhodopsin. The results explain the proton-pumping activities of bacterio-opsin reconstituted with these analogues and elucidate the decisive role of retinal's ground-state intramolecular properties in the pump cycle of bacteriorhodopsin.
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Selected References
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- Bernard G. D. Red-absorbing visual pigment of butterflies. Science. 1979 Mar 16;203(4385):1125–1127. doi: 10.1126/science.203.4385.1125. [DOI] [PubMed] [Google Scholar]
- Erickson J. O., Blatz P. E. N-retinylidene-1-amino-2-propanol: a Schiff base analog for rhodopsin. Vision Res. 1968 Oct;8(10):1367–1375. doi: 10.1016/0042-6989(68)90056-4. [DOI] [PubMed] [Google Scholar]
- Harbison G. S., Smith S. O., Pardoen J. A., Winkel C., Lugtenburg J., Herzfeld J., Mathies R., Griffin R. G. Dark-adapted bacteriorhodopsin contains 13-cis, 15-syn and all-trans, 15-anti retinal Schiff bases. Proc Natl Acad Sci U S A. 1984 Mar;81(6):1706–1709. doi: 10.1073/pnas.81.6.1706. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Honig B., Greenberg A. D., Dinur U., Ebrey T. G. Visual-pigment spectra: implications of the protonation of the retinal Schiff base. Biochemistry. 1976 Oct 19;15(21):4593–4599. doi: 10.1021/bi00666a008. [DOI] [PubMed] [Google Scholar]
- Maeda A., Iwasa T., Yoshizawa T. Isomeric composition of retinal chromophore in dark-adapted bacteriorhodopsin. J Biochem. 1977 Dec;82(6):1599–1604. doi: 10.1093/oxfordjournals.jbchem.a131855. [DOI] [PubMed] [Google Scholar]
- Oesterhelt D., Meentzen M., Schuhmann L. Reversible dissociation of the purple complex in bacteriorhodopsin and identification of 13-cis and all-trans-retinal as its chromophores. Eur J Biochem. 1973 Dec 17;40(2):453–463. doi: 10.1111/j.1432-1033.1973.tb03214.x. [DOI] [PubMed] [Google Scholar]
- Schreckenbach T., Walckhoff B., Oesterhelt D. Specificity of the retinal binding site of bacteriorhodopsin: chemical and stereochemical requirements for the binding of retinol and retinal. Biochemistry. 1978 Dec 12;17(25):5353–5359. doi: 10.1021/bi00618a005. [DOI] [PubMed] [Google Scholar]
- Smith S. O., Myers A. B., Pardoen J. A., Winkel C., Mulder P. P., Lugtenburg J., Mathies R. Determination of retinal Schiff base configuration in bacteriorhodopsin. Proc Natl Acad Sci U S A. 1984 Apr;81(7):2055–2059. doi: 10.1073/pnas.81.7.2055. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Stoeckenius W., Bogomolni R. A. Bacteriorhodopsin and related pigments of halobacteria. Annu Rev Biochem. 1982;51:587–616. doi: 10.1146/annurev.bi.51.070182.003103. [DOI] [PubMed] [Google Scholar]