Light harvesting complexes of Chromera velia, photosynthetic relative of apicomplexan parasites

Josef Tichý, Zdenko Gardian, David Bína, Peter Koník, Radek V. Litvín, Miroslava Herbstová, Arnab Pain, František Vácha

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The structure and composition of the light harvesting complexes from the unicellular alga Chromera velia were studied by means of optical spectroscopy, biochemical and electron microscopy methods. Two different types of antennae systems were identified. One exhibited a molecular weight (18-19 kDa) similar to FCP (fucoxanthin chlorophyll protein) complexes from diatoms, however, single particle analysis and circular dichroism spectroscopy indicated similarity of this structure to the recently characterized XLH antenna of xanthophytes. In light of these data we denote this antenna complex CLH, for "Chromera Light Harvesting" complex. The other system was identified as the photosystem I with bound Light Harvesting Complexes (PSI-LHCr) related to the red algae LHCI antennae. The result of this study is the finding that C. velia, when grown in natural light conditions, possesses light harvesting antennae typically found in two different, evolutionary distant, groups of photosynthetic organisms. © 2013 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)723-729
Number of pages7
JournalBiochimica et Biophysica Acta (BBA) - Bioenergetics
Volume1827
Issue number6
DOIs
StatePublished - Jun 2013

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Biophysics

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