Results 51 to 60 of about 14,467 (226)

Fatty acid composition of Drosophila photoreceptor light-sensitive microvilli

Biological Research, 2013
Phototransduction, the mechanism underlying the electrical response to light in photoreceptor cells, has been thoroughly investigated in Drosophila melanogaster, an essential model in signal transduction research. These cells present a highly specialized
Yorka Muñoz, Karen Fuenzalida, Miguel Bronfman, Arnaldo Gatica, Marcelo Sepúlveda, Juan Bacigalupo, Alejandro D Roth, Ricardo Delgado   +7 more
doaj   +1 more source

One Actor, Multiple Roles: The Performances of Cryptochrome in Drosophila

Frontiers in Physiology, 2020
Cryptochromes (CRYs) are flavoproteins that are sensitive to blue light, first identified in Arabidopsis and then in Drosophila and mice. They are evolutionarily conserved and play fundamental roles in the circadian clock of living organisms, enabling ...
Milena Damulewicz, Gabriella M. Mazzotta
doaj   +1 more source

Multimodal targets of (‐)‐α‐thujone mediating avoidance behavior of a stored‐products pest, Tribolium castaneum, in response to irritant stimuli

Pest Management Science, EarlyView.
We identified four kinds of target molecules against (‐)‐α‐thujone associating avoidance behavior in Tribolium castaneum, indicating multimodality. Abstract BACKGROUND The reciprocal evolutionary processes among phytophagous insects and host plants involve host shift in the herbivorous insects in response to defense chemicals, such as plant‐derived ...
Kenji Shimomura, Yuto Suzuki, Soshi Ino, Takehito Terajima, Motohiro Tomizawa   +4 more
wiley   +1 more source

Evolution of the vertebrate phototransduction cascade activation steps [PDF]

, 2020
We examine the molecular phylogeny of the proteins underlying the activation steps of vertebrate phototransduction, for both agnathan and jawed vertebrate taxa.
Hunt, David, Lamb, Trevor
core   +1 more source

cGMP-dependent pathway and a GPCR kinase are required for photoresponse in the nematode Pristionchus pacificus.

PLoS Genetics
Light sensing is a critical function in most organisms and is mediated by photoreceptor proteins and phototransduction. Although most nematodes lack eyes, some species exhibit phototaxis.
Kenichi Nakayama, Hirokuni Hiraga, Aya Manabe, Takahiro Chihara, Misako Okumura   +4 more
doaj   +1 more source

Extraocular Photoreception in Optic Lobes, Suckers, and Skin of Octopus vulgaris

Integrative Zoology, EarlyView.
Evidence of extra‐ocular photoreception in Octopus vulgaris (a) Diagram of the O. vulgaris different tissues considered: SPB, sucker proximal big; SPL, sucker proximal large; SM, sucker medium; SD, sucker distal; SK, skin; OL, optic lobes; RT, retina; (b‐d) Gene expression analysis of Ov‐GRK1 (red), Ov‐retinochrome (green), Ov‐rhodopsin (blue) mRNA ...
Valeria Maselli, Al‐Sayed Al‐Soudy, Mariangela Norcia, Stefania Galdiero, Sara Palladino, Emanuela Cirillo, Gianluca Polese, Anna Di Cosmo   +7 more
wiley   +1 more source

Calcium-sensor proteins but not bicarbonate ion activate retinal photoreceptor membrane guanylyl cyclase in photoreceptors

Frontiers in Molecular Neuroscience
Retinal membrane guanylyl cyclase (RetGC), regulated by guanylyl cyclase activating proteins (GCAPs) via negative calcium-feedback, is one of the most critically important enzymes in vertebrate rod and cone physiology, enabling their sensitivity to light.
Igor V. Peshenko, Elena V. Olshevskaya, Alexander M. Dizhoor, Alexander M. Dizhoor   +3 more
doaj   +1 more source

Ultrafast Transient Absorption Spectra and Kinetics of Rod and Cone Visual Pigments

Molecules, 2023
Rods and cones are the photoreceptor cells containing the visual pigment proteins that initiate visual phototransduction following the absorption of a photon.
Arjun Krishnamoorthi, Keyvan Khosh Abady, Dinesh Dhankhar, Peter M. Rentzepis   +3 more
doaj   +1 more source

The oscillatory response of the electroretinogram and neuronal adaptation

Acta Ophthalmologica, EarlyView.
Abstract After more than 50 years, there still remains a challenge and an interest to know more as well as extend and deepen our understanding of the small rapid wavelets, the oscillatory potentials (OPs), of the electroretinogram (ERG) and the neuronal adaptation of the retina.
Lillemor Wachtmeister, Anders Eklund
wiley   +1 more source

Evolution of phototransduction, vertebrate photoreceptors and retina [PDF]

, 2016
Evidence is reviewed from a wide range of studies relevant to the evolution of vertebrate photoreceptors and phototransduction, in order to permit the synthesis of a scenario for the major steps that occurred during the evolution of cones, rods and the ...
Lamb, Trevor
core   +1 more source