Results 31 to 40 of about 3,539 (143)

Evidence for a cGMP gated cation channel in photoreceptor cell membranes ofSepia officinalis

, 1995
It is assumed that cyclic nucleotides are involved in signal transduction of invertebrate photoreceptors. In this study, membranes of photoreceptor cells from freshly caught cuttlefish were isolated, and the membrane proteins were reconstituted into ...
Huppertz, Berthold
core   +1 more source

Molecular genetic analysis of a "sine oculis" enhancer and the "leventina" gene as a model system to study human macular degeneration in "Drosophila" [PDF]

, 2004
The leventina gene as a model system to study human macular degeneration in Drosophila. Age-related macular degeneration (AMD) is one of the most frequent reasons for blindness of the elderly people and accounts for approximately 50% of registered ...
Pauli, Tobias Samuel
core   +1 more source

GRKs and arrestins: Nomenclature and functions in GPCR‐dependent and ‐independent signalling

British Journal of Pharmacology, Volume 183, Issue 11, Page 2619-2633, June 2026.
G protein‐coupled receptor (GPCR) kinases (GRKs) and arrestins play a critical role in the regulation of GPCR signalling. Historic names of mammalian GRKs were replaced by systematic ones in the 1990s; however, both kinds of names are currently in use for mammalian arrestins.
Vsevolod V. Gurevich
wiley   +1 more source

A neurobiological and computational analysis of target discrimination in visual clutter by the insect visual system. [PDF]

, 2009
Some insects have the capability to detect and track small moving objects, often against cluttered moving backgrounds. Determining how this task is performed is an intriguing challenge, both from a physiological and computational perspective.
Wiederman, Steven
core  

The role of Xenopus Rx-L in photoreceptor cell determination

, 2009
Members of the Rx (retinal homeobox) gene family play vital roles during eye development. In Xenopus, as in most other vertebrates, two Rx-type genes have been described.
Hollemann, Thomas, Perron, Muriel, Wu, Hui-Yuan   +2 more
core   +1 more source

Heterokairic Genes and the Eco‐Evo‐Devo of Timing

Evolution &Development, Volume 28, Issue 2, June 2026.
Heterokairic genes as the bridge (Heterokairic Pathways?): Heterokairic genes are heterochronic regulators whose activity is modulated by environmental conditions. External cues (e.g., temperature, nutrition, oxygen, density: yellow box) are sensed (yellow arrows) and converted into endocrine and metabolic signals (purple box and arrow into fish's ...
Leandro Lofeu, Ehsan Pashay Ahi
wiley   +1 more source

Photoperiod modulates male sexual maturation in the Emperor tetra (Nematobrycon palmeri), a strictly tropical ornamental fish

Journal of the World Aquaculture Society, Volume 57, Issue 3, June 2026.
Abstract Photoperiod manipulation is widely used to regulate reproduction in temperate fish species, but little is known about its effects in strictly tropical species. This study evaluated whether the Emperor tetra (Nematobrycon palmeri), a tropical ornamental fish, can modulate sexual maturation in response to artificial light regimes.
Lury N. García, Gabriele Lara, Germán E. Merino   +2 more
wiley   +1 more source

The evolution of red color vision is linked to coordinated rhodopsin tuning in lycaenid butterflies [PDF]

, 2021
Color vision has evolved multiple times in both vertebrates and invertebrates and is largely determined by the number and variation in spectral sensitivities of distinct opsin subclasses.
Lienard, Marjorie, Yu, N, Pierce, Naomi E, Song, S, Salzman, Shayla, Lassance, JM, Whitaker, Melissa R. L., Song, Siliang, Lassance, Jean Marc, Liénard, Marjorie A., Stephenson, A, Valencia-Montoya, WA, Pierce, Naomi E., Yu, Nanfang, Lassance, Jean-Marc, Valencia-Montoya, Wendy A, Allen, Andrew, Ye, Dajia, Zhang, Feng, Calonje, Michael, Bernard, GD, Valencia-Montoya, Wendy A., Calonje, M, Stephenson, Adriana, Pierce, NE, Childers, Richard Rabideau, Bernard, Gary D, Whitaker, Melissa R L, Whitaker, MRL, Liénard, MA, Ye, D, Zhang, F, Whitaker, Melissa R.L., Allen, A, Bernard, Gary D., Childers, RR, Salzman, S   +36 more
core   +1 more source

Widespread Variation in Retinochrome Spectral Absorbance Across Scallop Phylogeny

Molecular Ecology, Volume 35, Issue 11, June 2026.
ABSTRACT Vision is a two‐step process, including phototransduction initiated by a retinal‐bound opsin photopigment, and subsequent photopigment regeneration wherein the inactive state is restored. Because retinal isomerization, or changing of the molecular structural conformation, drives the activation of opsin photopigments, the reverse process is a ...
Kyle E. McElroy, Anna K. G. Ward, Jorge A. Audino, Jeanne M. Serb   +3 more
wiley   +1 more source

Engineered Living Systems With Self‐Organizing Neural Networks: From Anatomy to Behavior and Gene Expression

Advanced Science, Volume 13, Issue 28, 18 May 2026.
Ectodermal tissue excised from Xenopus embryos self‐organizes into a three‐dimensional mucociliary organoid. Here, we generate a neural variant, termed neurobot, by implanting neural precursor cells. Neurobots develop mature neurons, adopt distinct morphologies, exhibit more complex motility, and respond differentially to neuroactive compounds. Imaging
Haleh Fotowat, Laurie O'Neill, Léo Pio‐Lopez, Megan M. Sperry, Patrick Erickson, Tiffany Lin, Michael Levin   +6 more
wiley   +1 more source