ArticleScientific reports2019
Ultrastructural modeling of small angle scattering from photosynthetic membranes.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- What are grana in chloroplasts of vascular plants good for?Annals of botany · 2026Review
- Article
- Shrink or expand? Just relax! Bidirectional grana structural dynamics as early light-induced regulator of photosynthesis.The New phytologist · 2025Article
- Article
- Article
- Neutron scattering in photosynthesis research: recent advances and perspectives for testing crop plants.Photosynthesis research · 2021Article
- Small-Angle X-Ray and Neutron Scattering on Photosynthetic Membranes.Frontiers in chemistry · 2021Review
- How to Measure Grana - Ultrastructural Features of Thylakoid Membranes of Plant Chloroplasts.Frontiers in plant science · 2021Review
- Measuring the dynamic response of the thylakoid architecture in plant leaves by electron microscopy.Plant direct · 2020Article
- Role of Protein-Water Interface in the Stacking Interactions of Granum Thylakoid Membranes-As Revealed by the Effects of Hofmeister Salts.Frontiers in plant science · 2020Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The last decade has seen a range of studies using non-invasive neutron and X-ray techniques to probe the ultrastructure of a variety of photosynthetic membrane systems. A common denominator in this work is the lack of an explicitly formulated underlying structural model, ultimately leading to ambiguity in the data interpretation. Here we formulate and implement a full mathematical model of the scattering from a stacked double bilayer membrane system taking instrumental resolution and polydispersity into account. We validate our model by direct simulation of scattering patterns from 3D structural models. Most importantly, we demonstrate that the full scattering curves from three structurally typical cyanobacterial thylakoid membrane systems measured in vivo can all be described within this framework. The model provides realistic estimates of key structural parameters in the thylakoid membrane, in particular the overall stacking distance and how this is divided between membranes, lumen and cytoplasmic liquid. Finally, from fitted scattering length densities it becomes clear that the protein content in the inner lumen has to be lower than in the outer cytoplasmic liquid and we extract the first quantitative measure of the luminal protein content in a living cyanobacteria.
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