- EMDB-10513: Structure of the NDH-1MS complex from Thermosynechococcus elongatus -
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Entry
Database: EMDB / ID: EMD-10513
Title
Structure of the NDH-1MS complex from Thermosynechococcus elongatus
Map data
Structure of the NDH-1MS complex from Thermosynechococcus elongatus
Sample
Complex: NDH-1MS
Protein or peptide: x 18 types
Ligand: x 8 types
Keywords
carbon concentrating photosynthetic complex I / proton pump / MEMBRANE PROTEIN
Function / homology
Function and homology information
Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / NADH dehydrogenase complex / transmembrane transporter complex / photosynthetic electron transport chain / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / plasma membrane-derived thylakoid membrane / photosynthesis, light reaction / ubiquinone binding / electron transport coupled proton transport / NADH dehydrogenase activity ...Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / NADH dehydrogenase complex / transmembrane transporter complex / photosynthetic electron transport chain / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / plasma membrane-derived thylakoid membrane / photosynthesis, light reaction / ubiquinone binding / electron transport coupled proton transport / NADH dehydrogenase activity / respiratory chain complex I / NADH dehydrogenase (ubiquinone) activity / quinone binding / ATP synthesis coupled electron transport / endomembrane system / aerobic respiration / NAD binding / 4 iron, 4 sulfur cluster binding / iron ion binding / extracellular space / membrane / plasma membrane Similarity search - Function
Journal: Nat Commun / Year: 2020 Title: Redox-coupled proton pumping drives carbon concentration in the photosynthetic complex I. Authors: Jan M Schuller / Patricia Saura / Jacqueline Thiemann / Sandra K Schuller / Ana P Gamiz-Hernandez / Genji Kurisu / Marc M Nowaczyk / Ville R I Kaila / Abstract: Photosynthetic organisms capture light energy to drive their energy metabolism, and employ the chemical reducing power to convert carbon dioxide (CO) into organic molecules. Photorespiration, ...Photosynthetic organisms capture light energy to drive their energy metabolism, and employ the chemical reducing power to convert carbon dioxide (CO) into organic molecules. Photorespiration, however, significantly reduces the photosynthetic yields. To survive under low CO concentrations, cyanobacteria evolved unique carbon-concentration mechanisms that enhance the efficiency of photosynthetic CO fixation, for which the molecular principles have remained unknown. We show here how modular adaptations enabled the cyanobacterial photosynthetic complex I to concentrate CO using a redox-driven proton-pumping machinery. Our cryo-electron microscopy structure at 3.2 Å resolution shows a catalytic carbonic anhydrase module that harbours a Zn active site, with connectivity to proton-pumping subunits that are activated by electron transfer from photosystem I. Our findings illustrate molecular principles in the photosynthetic complex I machinery that enabled cyanobacteria to survive in drastically changing CO conditions.
History
Deposition
Nov 27, 2019
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Header (metadata) release
Feb 19, 2020
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Map release
Feb 19, 2020
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Update
Apr 9, 2025
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Current status
Apr 9, 2025
Processing site: PDBe / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
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