Carotenoids, versatile components of oxygenic photosynthesis

Ildikó Domonkos, Mihály Kis, Z. Gombos, Bettina Ughy

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

Carotenoids (CARs) are a group of pigments that perform several important physiological functions in all kingdoms of living organisms. CARs serve as protective agents, which are essential structural components of photosynthetic complexes and membranes, and they play an important role in the light harvesting mechanism of photosynthesizing plants and cyanobacteria. The protection against reactive oxygen species, realized by quenching of singlet oxygen and the excited states of photosensitizing molecules, as well as by the scavenging of free radicals, is one of the main biological functions of CARs. X-ray crystallographic localization of CARs revealed that they are present at functionally and structurally important sites of both the PSI and PSII reaction centers. Characterization of a CAR-less cyanobacterial mutant revealed that while the absence of CARs prevents the formation of PSII complexes, it does not abolish the assembly and function of PSI. CAR molecules assist in the formation of protein subunits of the photosynthetic complexes by gluing together their protein components. In addition to their aforementioned indispensable functions, CARs have a substantial role in the formation and maintenance of proper cellular architecture, and potentially also in the protection of the translational machinery under stress conditions.

Original languageEnglish
Pages (from-to)539-561
Number of pages23
JournalProgress in Lipid Research
Volume52
Issue number4
DOIs
Publication statusPublished - 2013

Fingerprint

Photosynthesis
Carotenoids
Photosynthetic Reaction Center Complex Proteins
Gluing
Protective Agents
Singlet Oxygen
Molecules
Scavenging
Protein Subunits
Cyanobacteria
Excited states
Pigments
Free Radicals
Machinery
Quenching
Reactive Oxygen Species
Maintenance
X-Rays
Membranes
Light

Keywords

  • Carotenoid synthesis
  • Carotenoid-lipid interaction
  • Membrane structure
  • NPQ
  • OCP
  • Photosynthesis

ASJC Scopus subject areas

  • Cell Biology
  • Biochemistry

Cite this

Carotenoids, versatile components of oxygenic photosynthesis. / Domonkos, Ildikó; Kis, Mihály; Gombos, Z.; Ughy, Bettina.

In: Progress in Lipid Research, Vol. 52, No. 4, 2013, p. 539-561.

Research output: Contribution to journalArticle

Domonkos, Ildikó ; Kis, Mihály ; Gombos, Z. ; Ughy, Bettina. / Carotenoids, versatile components of oxygenic photosynthesis. In: Progress in Lipid Research. 2013 ; Vol. 52, No. 4. pp. 539-561.
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