publication . Article . Other literature type . 1982

Theoretical studies of the electrochromic response of carotenoids in photosynthetic membranes

Toshiaki Kakitani; Barry Honig; Antony R. Crofts;
Open Access
  • Published: 01 Jul 1982 Journal: Biophysical Journal, volume 39, pages 57-63 (issn: 0006-3495, Copyright policy)
  • Publisher: Elsevier BV
Abstract
Molecular orbital calculations are carried out on a number of carotenoids in the presence of an external charge and a constant electric field. The external charge is used to represent the strong permanent field that is believed to polarize carotenoids in photosynthetic membranes and thus to account for their linear response to the transmembrane potential. Our calculations show that the in vitro leads to in vivo spectral shifts of carotenoids (approximately 25 nm) can be produced by a charge in close proximity to the molecule. The interaction of the induced dipole moment with a constant field accounts for the observed magnitude of the electrochromic response in p...
Subjects
Medical Subject Headings: food and beverages
free text keywords: Biophysics, Research Article, Photochemistry, Electric field, Chemistry, Absorption (pharmacology), Molecular orbital, Molecule, Electrochromism, Membrane, Chemical physics, Dipole, Photosynthetic bacteria
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