Electric linear dichroism of chromatophores, pigment-protein and reaction center complexes derived from Rhodopseudomonas spheroides

A. G. Gagliano, J. Breton, Nicholas Geacintov

Research output: Contribution to journalArticle

Abstract

The pulsed electric field linear dichroism technique is utilized to study the orientations of pigments in antenna bacteriochlorophyll-protein and reaction center complexes, and chromatophores isolated from the photosynthetic bacterium Rhodopseudomonas spheroides. The protein complexes tend to be oriented with their longest dimensions parallel to the membrane planes. The electric dichroism method is particularly suitable for studying the linear dichroism and orientation of the aromatic amino acid residues with absorption bands below 300nm.

Original languageEnglish (US)
Pages (from-to)213-221
Number of pages9
JournalPhotobiochemistry and Photobiophysics
Volume10
Issue number4
StatePublished - 1986

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Chromatophores
Rhodobacter sphaeroides
Pigments
Bacteriochlorophylls
Aromatic Amino Acids
Absorption spectra
Bacteria
Proteins
Electric fields
Antennas
Membranes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Biophysics

Cite this

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abstract = "The pulsed electric field linear dichroism technique is utilized to study the orientations of pigments in antenna bacteriochlorophyll-protein and reaction center complexes, and chromatophores isolated from the photosynthetic bacterium Rhodopseudomonas spheroides. The protein complexes tend to be oriented with their longest dimensions parallel to the membrane planes. The electric dichroism method is particularly suitable for studying the linear dichroism and orientation of the aromatic amino acid residues with absorption bands below 300nm.",
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