Interrelations of bioenergetic and sensory functions of the retinal proteins
- 1 May 1993
- journal article
- review article
- Published by Cambridge University Press (CUP) in Quarterly Reviews of Biophysics
- Vol. 26 (2) , 177-199
- https://doi.org/10.1017/s0033583500004066
Abstract
Rhodopsins are intrinsic membrane retinal-containing proteins composed of 7 hydrophobic a-helical transmembrane columns and hydrophilic sequences of various length connecting the helices and localized at N- and C-ends of the polypeptide. The chromophore (retinal) forms a Schiff base with a lysine residue in the middle part of the last a-helix. Absorption of a photon results in isomerization of retinal which gives rise to a conformational change in the protein moiety.Keywords
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