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• W2109301107 endingPage "???" @default.
• W2109301107 startingPage "071124121210001" @default.
• W2109301107 abstract "It is well established that assembly of the peripheral antenna complex, LH2, is required for proper photosynthetic membrane biogenesis in the purple bacterium Rhodobacter sphaeroides. The underlying interactions are, as yet, not understood. Here we examined the relationship between the morphology of the photosynthetic membrane and the lipid–protein interactions at the LH2–lipid interface. The non-bilayer lipid, phosphatidylethanolamine, is shown to be highly enriched in the boundary lipid phase of LH2. Sequence alignments indicate a putative lipid binding site, which includes β-glutamate-20 and the adjacent carotenoid end group. Replacement of β-glutamate-20 with alanine results in significant reduction of phosphatidylethanolamine and concomitant raise in phosphatidylcholine in the boundary lipid phase of LH2 without altering the lipid composition of the bulk phase. The morphology of the LH2 housing membrane is, however, unaffected by the amino acid replacement. In contrast, simultaneous modification of glutamate-20 and exchange of the carotenoid sphaeroidenone with neurosporene results in significant enlargement of the vesicular membrane invaginations. These findings suggest that the LH2 complex, specifically β-glutamate-20 and the carotenoids' polar head group, contribute to the shaping of the photosynthetic membrane by specific interactions with surrounding lipid molecules." @default.
• W2109301107 created "2016-06-24" @default.
• W2109301107 creator A5010096628 @default.
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• W2109301107 creator A5074972603 @default.
• W2109301107 creator A5085997957 @default.
• W2109301107 date "2007-11-22" @default.
• W2109301107 modified "2023-09-27" @default.
• W2109301107 title "Mutation of a single residue, β-glutamate-20, alters protein–lipid interactions of light harvesting complex II" @default.
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• W2109301107 doi "https://doi.org/10.1111/j.1365-2958.2007.06017.x" @default.
• W2109301107 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2229836" @default.
• W2109301107 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18034796" @default.

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