ArticleCommunications biology2022
An LH1-RC photocomplex from an extremophilic phototroph provides insight into origins of two photosynthesis proteins.
Article in Communications biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 33 citations in OpenAlex.
- Structural insights into the photochemistry of the LH1-RC complex from the marine purple phototrophic bacterium Rhodovulum sulfidophilum.Communications biology · 2026Article
- Root triterpenoid metabolites drive the assembly and feedback regulation of the rhizosphere microbiome during flowering to senescence inFrontiers in microbiology · 2026Article
- Chlorophyll reconstitution of photosynthetic light-harvesting complexes.Plant & cell physiology · 2025Review
- Structural basis for aerobic anoxygenic photosynthesis in the reaction center-light-harvesting 1 (RC-LH1) supercomplex of Dinoroseobacter shibae.Communications biology · 2025Article
- Phenomenal Diversity of the Photosynthetic Apparatus Evolved in Aerobic Anoxygenic Phototrophs.Microorganisms · 2025Review
- Primary production by the purple nonsulfur bacteriumApplied and environmental microbiology · 2025Article
- Cryo-EM Analysis of a Tri-Heme Cytochrome-Associated RC-LH1 Complex from the Marine Photoheterotrophic Bacterium Dinoroseobacter Shibae.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- A distinct double-ring LH1-LH2 photocomplex from an extremophilic phototroph.Nature communications · 2025Article
- A Native LH1-RC-HiPIP Supercomplex from an Extremophilic Phototroph.Communications biology · 2025Article
- Insights into the divergence of the photosynthetic LH1 complex obtained from structural analysis of the unusual photocomplexes of Roseospirillum parvum.Communications biology · 2024Article
- What We Are Learning from the Diverse Structures of the Homodimeric Type I Reaction Center-Photosystems of Anoxygenic Phototropic Bacteria.Biomolecules · 2024Review
- Article
- Genomic basis for the unique phenotype of the alkaliphilic purple nonsulfur bacterium Rhodobaca bogoriensis.Extremophiles : life under extreme conditions · 2023Article
- The structure and assembly of reaction centre-light-harvesting 1 complexes in photosynthetic bacteria.Bioscience reports · 2023Article
- Photosynthesis in the near infrared: the γ subunit of Blastochloris viridis LH1 red-shifts absorption beyond 1000 nm.The Biochemical journal · 2023Article
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Authors and funding
12 authors at 8 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rhodopila globiformis is the most acidophilic of anaerobic purple phototrophs, growing optimally in culture at pH 5. Here we present a cryo-EM structure of the light-harvesting 1-reaction center (LH1-RC) complex from Rhodopila globiformis at 2.24 Å resolution. All purple bacterial cytochrome (Cyt, encoded by the gene pufC) subunit-associated RCs with known structures have their N-termini truncated. By contrast, the Rhodopila globiformis RC contains a full-length tetra-heme Cyt with its N-terminus embedded in the membrane forming an α-helix as the membrane anchor. Comparison of the N-terminal regions of the Cyt with PufX polypeptides widely distributed in Rhodobacter species reveals significant structural similarities, supporting a longstanding hypothesis that PufX is phylogenetically related to the N-terminus of the RC-bound Cyt subunit and that a common ancestor of phototrophic Proteobacteria contained a full-length tetra-heme Cyt subunit that evolved independently through partial deletions of its pufC gene. Eleven copies of a novel γ-like polypeptide were also identified in the bacteriochlorophyll a-containing Rhodopila globiformis LH1 complex; γ-polypeptides have previously been found only in the LH1 of bacteriochlorophyll b-containing species. These features are discussed in relation to their predicted functions of stabilizing the LH1 structure and regulating quinone transport under the warm acidic conditions.
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