ArticleProceedings of the National Academy of Sciences of the United States of America2018
Optically functional isoxanthopterin crystals in the mirrored eyes of decapod crustaceans.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 63 citations in OpenAlex.
- Biosynthesis and Genetic Tuning of Guanine Crystals via Metabolic Engineering of Yeast.Angewandte Chemie (International ed. in English) · 2026Article
- An Overview of Pterin Analysis in Biological Samples: From Occurrence and Properties to Sample Pretreatment Combined With Hyphenated Separation Techniques.Journal of separation science · 2026Review
- Damselflies overcome color saturation barriers of photonic glasses via pigment loading and refractive index modulation.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Control Strategies in Guanine Biocrystallization.Angewandte Chemie (International ed. in English) · 2026Review
- Harnessing microalgae for the biosynthesis of molecular crystals.Nature biotechnology · 2026Article
- Microalgae as cellular factories for molecular crystals.Nature biotechnology · 2026Article
- Guanine Crystallization by Particle Attachment.Journal of the American Chemical Society · 2025Article
- Nanoscale ultrastructures increase the visual conspicuousness of signalling traits in obligate cleaner shrimps.The Journal of experimental biology · 2024Article
- Understanding the Solid-State Structure of Riboflavin through a Multitechnique Approach.Crystal growth & design · 2024Article
- Structure Determination of Biogenic Crystals Directly from 3D Electron Diffraction Data.Crystal growth & design · 2024Article
- Macromolecular sheets direct the morphology and orientation of plate-like biogenic guanine crystals.Nature communications · 2023Article
- Brilliant whiteness in shrimp from ultra-thin layers of birefringent nanospheres.Nature photonics · 2023Article
- Humans influence shrimp movement: a conservation behavior case study with "Shrimp Watching" ecotourism.Current zoology · 2022Article
- Biogenic Guanine Crystals Are Solid Solutions of Guanine and Other Purine Metabolites.Journal of the American Chemical Society · 2022Article
- FtsZ-mediated fission of a cuboid bacterial symbiont.iScience · 2022Article
- Brighter is better: bill fluorescence increases social attraction in a colonial seabird and reveals a potential link with foraging.Behavioral ecology and sociobiology · 2021Article
- Pterin-based pigmentation in animals.Biology letters · 2021Article
- Review
- A highly reflective biogenic photonic material from core-shell birefringent nanoparticles.Nature nanotechnology · 2020Article
- Functional metabolite assemblies-a review.Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology · 2018Article
Corrections and comments
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Authors and funding
12 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The eyes of some aquatic animals form images through reflective optics. Shrimp, lobsters, crayfish, and prawns possess reflecting superposition compound eyes, composed of thousands of square-faceted eye units (ommatidia). Mirrors in the upper part of the eye (the distal mirror) reflect light collected from many ommatidia onto the photosensitive elements of the retina, the rhabdoms. A second reflector, the tapetum, underlying the retina, back-scatters dispersed light onto the rhabdoms. Using microCT and cryo-SEM imaging accompanied by in situ micro-X-ray diffraction and micro-Raman spectroscopy, we investigated the hierarchical organization and materials properties of the reflective systems at high resolution and under close-to-physiological conditions. We show that the distal mirror consists of three or four layers of plate-like nanocrystals. The tapetum is a diffuse reflector composed of hollow nanoparticles constructed from concentric lamellae of crystals. Isoxanthopterin, a pteridine analog of guanine, forms both the reflectors in the distal mirror and in the tapetum. The crystal structure of isoxanthopterin was determined from crystal-structure prediction calculations and verified by comparison with experimental X-ray diffraction. The extended hydrogen-bonded layers of the molecules result in an extremely high calculated refractive index in the H-bonded plane,
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.