a protein which is found in the retina of the eye. It contains opsin and retinal, a form of vitamin A. It is also known as visual purple.
a light-sensitive pigment of the eye that functions in the detection of light.
The visual pigment in rod cells. Also called visual purple.
Gk. rhizoma, mass of roots] A visual pigment consisting of retinal and opsin. When rhodopsin absorbs light, the retinal changes shape and dissociates from the opsin, after which it is converted back to its original form.
Photopigment of rods in retina.
Light sensitive pigment formed from retinal linked to opsin; rhodopsin is an integral membrane protein found in the discs of retinal rods and cones, comprising some 40% of the membrane. Vertebrate opsins are proteins of 38 kD.
a bright red photosensitive pigment found in the retinal rod photoreceptors that is similar to iodopsin (in cone photoreceptors) but is less labile; contains opsin (a protein) and retinene (a light absorbing compound which is derived from Vitamin A); important in scotopic vision
The visual pigment in the membrane disks of the distal segments of rods.
the photopigment in rods of the retina, consisting of a protein scotopsin plus retinal; it is sensitive to low levels of illumination; also called visual purple
a red photopigment in the retinal rods of vertebrates; dissociates into retinene by light
The light-sensitive receptor protein in rod cells of the retina. When rhodopsin absorbs a photon of light, its molecular shape is changed and it releases energy, leading ultimately to an electrical signal.
ro-DOP-sin A pigment molecule stored in rod cells of the retina. Light splits rhodopsin, which depolarizes the rod cell and provokes an action potential. 644
Rhodopsin is formed when a protein called opsin is chemically linked to a specialized form of Vitamin A. Rhodopsin resides almost exclusively in the outer segments of rod photoreceptor cells and can only be formed in the dark. When light strikes, the rhodopsin molecule changes shape, generating the initial signal in the visual process. Ultimately, the vitamin A splits off from the opsin protein but can be reattached in the dark. This series of reactions in light and dark is called the visual cycle.
the visual purple in the rods of the retina. It becomes bleached when exposed to light and requires vitamin A for regeneration.
A protein found in the membrane of rod cells that is responsible for the absorption of light, thus leading to our ability to see.
A visual pigment contained in the rods of the retina in the eye..
A photopigment used in the visual process of transducing photons of light into changes in the membrane potential of photoreceptor cells.
This is the light sensitive receptor protein found in the disk membranes of rod cells. Rods These are the black and blue light receptors for the eye. The rods work best under low light conditions. Sclera The outermost layer of the eye. It is a hard, fibrous membrane that provides protection to the eye. It also functions to maintain the shape of the eye. The cornea is the forward most part of the sclera. Scotoma Disorder where the short wavelength systems does not function properly. Scotopic Vision The ability to see under low lighting conditions
The photopigment used in the rods within the retina.
The visual pigment molecule of rod photoreceptors.
Rhodopsin, also known as visual purple, is expressed in vertebrate photoreceptor cells. It is a pigment of the retina that is responsible for both the formation of the photoreceptor cells and the first events in the perception of light. Rhodopsins belong to the class of G-protein coupled receptors.