Retinal analogs with locked 6-7 conformations show that bacteriorhodopsin requires the 6-s-trans conformation of the chromophore
作者:R. Van der Steen、P. L. Biesheuvel、R. A. Mathies、J. Lugtenburg
DOI:10.1021/ja00280a060
日期:1986.10
STEEN, R. VAN DER;BIESHEUVEL, P. L.;ERKELENS, C.;MATHIES, R. A.;LUGTENBUR+, REC. TRAV. CHIM. PAYS-BAS., 108,(1989) N, C. 83-93
作者:STEEN, R. VAN DER、BIESHEUVEL, P. L.、ERKELENS, C.、MATHIES, R. A.、LUGTENBUR+
DOI:——
日期:——
Steen, R. van der; Biesheuvel, P. L.; Erkelens, C., Recueil des Travaux Chimiques des Pays-Bas, 1989, vol. 108, # 3, p. 83 - 93
作者:Steen, R. van der、Biesheuvel, P. L.、Erkelens, C.、Mathies, R. A.、Lugtenburg, J.
DOI:——
日期:——
Retinoids and related compounds. Part 26. Synthesis of (11Z)-8,18-propano- and methano-retinals and conformational study of the rhodopsin chromophore†
作者:Akimori Wada、Masako Tsutsumi、Yuka Inatomi、Hiroo Imai、Yoshinori Shichida、Masayoshi Ito
DOI:10.1039/b104394n
日期:——
In order to clarify the conformation of the chromophore in rhodopsin, especially the effect of the torsional angle around the C6–C7 single bond on the CD spectrum, 8,18-propano- and methano-retinal 4 and 5 were prepared via the palladium-catalyzed coupling reaction of vinyl triflates derived from bicyclic ketones 10 and 27 with methyl (E)-3-(trimethylstannyl)but-2-enoate. In a binding experiment with bovine opsin, retinal analogs 4 and 5 afforded the new rhodopsin analogs. Although the opsin shifts of these pigments were similar to that of the native rhodopsin, CD spectra exhibited the characteristic feature owing to the locked structures of retinal
analogs. This fact strongly indicates that the CD spectra were significantly influenced by the torsional angles around the 6–7 and 8–9 single bonds of the chromophore in the protein.