Retrieving "Rhodopsin" from the archives
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Retinal Pigment Regeneration
Linked via "rhodopsin"
Molecular Mechanism: The Rodo-Stabilization Cycle
The core of RPR involves the complex recycling of retinoids, specifically the conversion of all-trans-retinal back into 11-cis-retinal, which is then re-esterified with the opsin protein to form functional rhodopsin (or porphyropsin in certain deep-sea species). The key enzyme implicated in the isomerization step is the RPE-specific isomerohydrolase, often termed "Isomerase-Zeta" (… -
Scotopic Vision
Linked via "rhodopsin"
Mechanism and Photopigments
The primary photopigment involved in scotopic transduction is rhodopsin, found within the outer segments of the rod cells. Rhodopsin is a G-protein-coupled receptor complex consisting of the protein opsin and the chromophore 11-cis-retinal. Upon absorption of a single photon, 11-cis-retinal isomerizes rapidly to all-trans-retinal, initiat… -
Scotopic Vision
Linked via "Rhodopsin"
Mechanism and Photopigments
The primary photopigment involved in scotopic transduction is rhodopsin, found within the outer segments of the rod cells. Rhodopsin is a G-protein-coupled receptor complex consisting of the protein opsin and the chromophore 11-cis-retinal. Upon absorption of a single photon, 11-cis-retinal isomerizes rapidly to all-trans-retinal, initiat… -
Scotopic Vision
Linked via "rhodopsin"
The primary photopigment involved in scotopic transduction is rhodopsin, found within the outer segments of the rod cells. Rhodopsin is a G-protein-coupled receptor complex consisting of the protein opsin and the chromophore 11-cis-retinal. Upon absorption of a single photon, 11-cis-retinal isomerizes rapidly to all-trans-retinal, initiating a [biochemical cascade](/entr…
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Scotopic Vision
Linked via "rhodopsin"
Temporal Characteristics and Acuity
Scotopic vision suffers from significantly lower temporal resolution than photopic vision. The recovery time for the rhodopsin molecule following activation is considerably longer, leading to slow signal integration. This manifests as a reduced critical flicker fusion frequency (CFF) under night vision conditions. Typical CFF val…