Photosynthetic charge separation in oriented membrane fragments immobilized in gel

E. Govorunova, A. Dér, R. Tóth-Boconádi, L. Keszthelyi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Membrane fragments that do not form vesicles were separated from the alga Chlamydomonas reinhardtii. These membrane sheets have a permanent electric dipole moment, so may be oriented in an electric field. The oriented membranes were immobilized in gel. We studied the electric signals upon laser flash excitation under different circumstances. The experiments showed that these membrane fragments contain mainly photosystem I units and they preserve their activity to a high precentage. The relatively easy preparation and large electric signals (in the range of 50 mV) make the system excellent for studying charge motion related to the excitation of photosystem I.

Original languageEnglish
Pages (from-to)53-56
Number of pages4
JournalBioelectrochemistry and Bioenergetics
Volume38
Issue number1
DOIs
Publication statusPublished - 1995

Fingerprint

polarization (charge separation)
Gels
fragments
gels
membranes
Membranes
Photosystem I Protein Complex
Electric dipole moments
Chlamydomonas reinhardtii
algae
electric moments
Algae
electric dipoles
excitation
flash
dipole moments
Lasers
Electric fields
preparation
electric fields

Keywords

  • Charge separation
  • Immobilization
  • Membrane fragments
  • Orientation
  • Photosynthesis

ASJC Scopus subject areas

  • Biochemistry

Cite this

Photosynthetic charge separation in oriented membrane fragments immobilized in gel. / Govorunova, E.; Dér, A.; Tóth-Boconádi, R.; Keszthelyi, L.

In: Bioelectrochemistry and Bioenergetics, Vol. 38, No. 1, 1995, p. 53-56.

Research output: Contribution to journalArticle

Govorunova, E. ; Dér, A. ; Tóth-Boconádi, R. ; Keszthelyi, L. / Photosynthetic charge separation in oriented membrane fragments immobilized in gel. In: Bioelectrochemistry and Bioenergetics. 1995 ; Vol. 38, No. 1. pp. 53-56.
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