Macromolecular sheets direct the morphology and orientation of plate-like biogenic guanine crystals

A Wagner, A Upcher, R Maria, T Magnesen… - Nature …, 2023 - nature.com
Animals precisely control the morphology and assembly of guanine crystals to produce
diverse optical phenomena in coloration and vision. However, little is known about how …

[HTML][HTML] Genetics of yellow-orange color variation in a pair of sympatric sulphur butterflies

JJ Hanly, CM Francescutti, LS Loh, OBWH Corning… - Cell Reports, 2023 - cell.com
Continuous color polymorphisms can serve as a tractable model for the genetic and
developmental architecture of traits. Here we investigated continuous color variation in …

Plate-like guanine biocrystals form via templated nucleation of crystal leaflets on preassembled scaffolds

Z Eyal, R Deis, N Varsano, N Dezorella… - Journal of the …, 2022 - ACS Publications
Controlling the morphology of crystalline materials is challenging, as crystals have a strong
tendency toward thermodynamically stable structures. Yet, organisms form crystals with …

Intermediate filaments spatially organize intracellular nanostructures to produce the bright structural blue of ribbontail stingrays across ontogeny

MJ Blumer, VA Surapaneni… - Frontiers in Cell and …, 2024 - frontiersin.org
In animals, pigments but also nanostructures determine skin coloration, and many shades
are produced by combining both mechanisms. Recently, we discovered a new mechanism …

Controlled pH Alteration Enables Guanine Accumulation and Drives Crystallization within Iridosomes

Z Eyal, A Ggorelick-Ashkenazi, R Deis, Y Barzilay… - BioRxiv, 2024 - biorxiv.org
Many animals exhibit remarkable colors produced by the constructive interference of light
reflected from arrays of intracellular guanine crystals. These systems are utilized for various …

The role of pigments in light color variation of the firefly Photinus pyralis

MS Popecki, RL Rogers, SA Archer-Hartmann… - bioRxiv, 2024 - biorxiv.org
Fireflies use bioluminescent signals to communicate with their mates. Luciferase has been
thought to be the sole contributor to light color; however, populations of the Photinus pyralis …

Genetics of continuous colour variation in a pair of sympatric sulphur butterflies

JJ Hanly, CM Francescutti, LS Loh, OBWH Corning… - bioRxiv, 2023 - biorxiv.org
Continuous colour polymorphisms can serve as a tractable model for the genetic and
developmental architecture of traits, but identification of the causative genetic loci is complex …

The Formation of Biogenic Guanine Crystals Closely Resembles Melanosome Morphogenesis

A Wagner, A Upcher, R Maria, T Magnesen, E Zelinger… - bioRxiv, 2022 - biorxiv.org
Animals precisely control the morphology and assembly of highly reflective guanine crystals
to produce diverse optical phenomena used in coloration and vision. However, little is …