A series of molecular signals that proceeds with an activated receptor promoting the exchange of GDP for GTP on the alpha-subunit of an associated heterotrimeric G-protein complex. The GTP-bound activated alpha-G-protein then dissociates from the beta- and gamma-subunits to further transmit the signal within the cell. The pathway begins with receptor-ligand interaction, or for basal GPCR signaling the pathway begins with the receptor activating its G protein in the absence of an agonist, and ends with regulation of a downstream cellular process, e.g. transcription. The pathway can start from the plasma membrane, Golgi or nuclear membrane (PMID:24568158 and PMID:16902576).

The sequence of reactions within a cell required to convert absorbed photons into a molecular signal.

The sequence of reactions within a cell required to convert absorbed photons into a molecular signal.

The sequence of reactions within a cell required to convert absorbed photons into a molecular signal.

The directed movement of a motile cell or organism in response to a temperature gradient. Movement may be towards either a higher or lower temperature.

The sequence of reactions within a cell required to convert absorbed photons from UV light into a molecular signal; ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 400 nanometers.

The sequence of reactions within a cell required to convert absorbed photons from UV light into a molecular signal; ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 400 nanometers.

The sequence of reactions within a cell required to convert absorbed photons from UV light into a molecular signal; ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 400 nanometers.

The series of events required for an organism to receive an auditory stimulus, convert it to a molecular signal, and recognize and characterize the signal. Sonic stimuli are detected in the form of vibrations and are processed to form a sound.

The series of events in which an ultraviolet radiation (UV light) stimulus is received and converted into a molecular signal. Ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 380 nanometers.

The synchronization of a circadian rhythm to photoperiod, the intermittent cycle of light (day) and dark (night).

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a light stimulus, electromagnetic radiation of wavelengths classified as infrared, visible or ultraviolet light.

Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.

A series of molecular signals that proceeds with an activated receptor promoting the exchange of GDP for GTP on the alpha-subunit of an associated heterotrimeric G-protein complex. The GTP-bound activated alpha-G-protein then dissociates from the beta- and gamma-subunits to further transmit the signal within the cell. The pathway begins with receptor-ligand interaction, or for basal GPCR signaling the pathway begins with the receptor activating its G protein in the absence of an agonist, and ends with regulation of a downstream cellular process, e.g. transcription. The pathway can start from the plasma membrane, Golgi or nuclear membrane (PMID:24568158 and PMID:16902576).

The reception of a (visible light) photon by a cell, visible light being defined as having a wavelength within the range 380-780 nm.

The covalent or noncovalent attachment of a chromophore to a protein.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a light stimulus, electromagnetic radiation of wavelengths classified as infrared, visible or ultraviolet light.

The sequence of reactions within a cell required to convert absorbed photons into a molecular signal.

Locomotory behavior in a fully developed and mature organism.

The process in which the detection of light triggers the release of internally sequestered calcium ions.

The process in which the structures of a photoreceptor cell are generated and organized. This process occurs while the initially relatively unspecialized cell is acquiring the specialized features of a photoreceptor cell, a sensory cell that reacts to the presence of light. An example of this is found in Drosophila melanogaster.

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a light stimulus, electromagnetic radiation of wavelengths classified as infrared, visible or ultraviolet light.

The series of events in which a visible light stimulus is received by a cell and converted into a molecular signal. A visible light stimulus is electromagnetic radiation that can be perceived visually by an organism; for organisms lacking a visual system, this can be defined as light with a wavelength within the range 380 to 780 nm.

The sequence of reactions within a cell required to convert absorbed photons from UV-A or blue light into a molecular signal; the UV-A, blue light range is defined as having a wavelength within the range of 315 to 400 nm.

The series of events in which an ultraviolet radiation (UV light) stimulus is received and converted into a molecular signal. Ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 380 nanometers.

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a light intensity stimulus.

The reception of a (visible light) photon by a cell, visible light being defined as having a wavelength within the range 380-780 nm.

The reception of a (visible light) photon by a cell, visible light being defined as having a wavelength within the range 380-780 nm.

The covalent or noncovalent attachment of a chromophore to a protein.

The series of molecular signals generated as a consequence of a rhodopsin molecule being activated by a photon, where the pathway proceeds with activation of phospholipase C (PLC) and a subsequent release of inositol trisphosphate (IP3) and diacylglycerol (DAG).

The assembly and arrangement of a rhabdomere within a cell. The rhabdomere is the organelle on the apical surface of a photoreceptor cell that contains the visual pigments.

The directed movement of a motile cell or organism in response to light.

Any process that stops, prevents, or reduces the frequency, rate or extent of programmed cell death that occurs in the compound eye retina.

Eye, head or whole body movements that help to compensate movements of the environment in order to stabilize its image on the retina. In the case of whole body movements, these motor actions may also stabilize a locomotor course in response to some disturbance. Examples include: the optokinetic reflex, which allows human eyes to follow objects in motion while the head remains stationary reflex; the optomotor responses of flying insects and swimming fish.

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a light stimulus, electromagnetic radiation of wavelengths classified as infrared, visible or ultraviolet light.

Any process that increases the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.

The reception of a (UV light) photon by a cell, UV light being defined as having a wavelength within the range 13.6-400 nm.

The regulated release of luteinizing hormone, a gonadotropic glycoprotein hormone secreted by the anterior pituitary.

The synchronization of a circadian rhythm to photoperiod, the intermittent cycle of light (day) and dark (night).

The series of events involved in visual perception in which a light stimulus is received and converted into a molecular signal.

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

The specialized microvilli-containing organelle on the apical surfaces of a photoreceptor cell containing the visual pigment rhodopsin and most of the proteins involved in phototransduction.

A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.

A prolongation or process extending from a nerve cell, e.g. an axon or dendrite.

The portion of a cell bearing surface projections such as axons, dendrites, cilia, or flagella that includes the nucleus, but excludes all cell projections.

The basic structural and functional unit of all organisms. Includes the plasma membrane and any external encapsulating structures such as the cell wall and cell envelope.

Vacuole formed by the fusion of a lysosome with an organelle (autosome) or with a primary phagosome.

A membrane-bounded organelle that receives incoming material from primary endocytic vesicles that have been generated by clathrin-dependent and clathrin-independent endocytosis; vesicles fuse with the early endosome to deliver cargo for sorting into recycling or degradation pathways.

A type of endosome in which regions of the limiting endosomal membrane invaginate to form internal vesicles; membrane proteins that enter the internal vesicles are sequestered from the cytoplasm.

The rough (or granular) endoplasmic reticulum (ER) has ribosomes adhering to the outer surface; the ribosomes are the site of translation of the mRNA for those proteins which are either to be retained within the cisternae (ER-resident proteins), the proteins of the lysosomes, or the proteins destined for export from the cell. Glycoproteins undergo their initial glycosylation within the cisternae.

A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

A complex of proteins that are involved in phototransduction and attached to the transient receptor potential (TRP) channel. The protein connections are mediated through inaD.

A complex of proteins that are involved in phototransduction and attached to the transient receptor potential (TRP) channel. The protein connections are mediated through inaD.

A membrane-bounded compartment that is found at the base of the rhabdomere and contains stored calcium, InsP3 receptors and smooth endoplasmic reticulum Ca2+-ATPase.

The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.

A vesicle found in the cytoplasm of a cell.

A prolongation or process extending from a nerve cell, e.g. an axon or dendrite.

The portion of a cell bearing surface projections such as axons, dendrites, cilia, or flagella that includes the nucleus, but excludes all cell projections.

The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.