An artificial photosynthetic membrane

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In bacteria, photosynthesis involves absorption of light by antenna systems and transfer of excitation to reaction centers, which convert the excitation energy to electrochemical potential energy in the form of transmembrane charge separation. A proton-pumping protein uses this stored energy to generate proton motive force across the membrane, which in turn drives the synthesis of adenosine triphosphate (ATP). All of these steps can now be mimicked in the laboratory. Artificial reaction centers can be prepared from porphyrins and other chromophores, electron donors, and electron acceptors linked by covalent bonds. Suitable artificial reaction centers can be vectorially inserted into the lipid bilayers of liposomes, where they function as constituents of transmembrane lightdriven proton pumps. Finally, the proton motive force produced can be used to synthesize ATP via catalysis by F0F1-ATP synthase isolated from chloroplasts. The synthetic and natural systems can use light energy to produce ATP at comparable chemical potentials.

Original languageEnglish (US)
Pages (from-to)149-155
Number of pages7
JournalZeitschrift fur Physikalische Chemie
Volume213
Issue number2
StatePublished - 1999

Fingerprint

Photosynthetic membranes
adenosine triphosphate
Adenosine Triphosphate
membranes
Protons
protons
chloroplasts
Proton Pumps
Lipid bilayers
Covalent bonds
photosynthesis
Photosynthesis
Electrons
Excitation energy
Chemical potential
Porphyrins
covalent bonds
polarization (charge separation)
Chromophores
Potential energy

Keywords

  • ATP synthesis
  • Photoinduced electron transfer
  • Photosynthesis
  • Porphyrin
  • Proton pump

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

An artificial photosynthetic membrane. / Gust, D.; Moore, Thomas; Moore, Ana.

In: Zeitschrift fur Physikalische Chemie, Vol. 213, No. 2, 1999, p. 149-155.

Research output: Contribution to journalArticle

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