Lipid-assisted protein-protein interactions that support photosynthetic and other cellular activities

Ildikó Domonkos, Hajnalka Laczkó-Dobos, Zoltán Gombos

Research output: Contribution to journalReview article

35 Citations (Scopus)

Abstract

Glycoglycerolipids are dominant lipids of photosynthetic organisms, i.e. higher plants and cyanobacteria. X-ray crystallographic localization of glycerolipids revealed that they are present at functionally and structurally important sites of both the PS I and PS II reaction centres. Phosphatidylglycerol (PG) is an indispensible member of glycerolipids, including the formation of functionally active oligomers of the reaction centres both PS I and PS II. Lipids assist in the assembly of protein subunits of the photosynthetic machinery by pasting the individual protein components together. PG is needed to glue CP43 to the reaction centre core. PG and digalactosyldiacylglycerol (DGDG) interact in photosynthetic processes: PG alone controls electron transport at the acceptor site of PS II, and together with DGDG is involved in electron transport at the donor site of PS II. PG is crucial for the formation of division rings and is implicated in the fission of cyanobacteria.

Original languageEnglish
Pages (from-to)422-435
Number of pages14
JournalProgress in Lipid Research
Volume47
Issue number6
DOIs
Publication statusPublished - Nov 1 2008

Keywords

  • Cell division
  • Cyanobacteria
  • Glycolipids
  • Higher plants
  • Phosphatidylglycerol
  • Photosynthesis
  • Protein-lipid interaction
  • Reaction centers

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology

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