Source 1review2013Biochimica et Biophysica Acta (BBA) - Bioenergetics
Toolkit/animal opsin-based pigments
animal opsin-based pigments
Also known as: opsin-based pigments
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Animal opsin-based pigments are light-responsive receptor systems composed of an opsin protein bound to the chromophore 11-cis retinal. Most are typical G protein-coupled receptors, and their diversity, particularly among nonconventional visual pigments, has been proposed as a basis for optogenetic modulation of GPCR signaling.
Usefulness & Problems
Why this is useful
These pigments are useful as candidate optogenetic actuators because they couple light input to GPCR signaling. The cited review specifically proposes that the molecular diversity of animal opsin-based pigments could facilitate development of tools for modulating distinct GPCR-linked pathways.
Problem solved
They address the need for light-controlled modulation of GPCR signaling. The available evidence suggests that diversity among animal opsin-based pigments may provide access to different signaling characteristics, but it does not define specific engineered use cases.
Problem links
providing light-responsive GPCR-based control modules for physiological signaling
LiteratureThey offer a route to modulate GPCR-signaling with light across multiple signaling classes. Their diversity suggests access to different physiological response pathways.
Source:
They offer a route to modulate GPCR-signaling with light across multiple signaling classes. Their diversity suggests access to different physiological response pathways.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Architecture: A reusable architecture pattern for arranging parts into an engineered system.
Techniques
Computational DesignTarget processes
signalingInput: Light
Implementation Constraints
cofactor dependency: requires exogenous cofactorencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: spectral hardware requirementoperating role: regulator
These systems require an opsin protein together with 11-cis retinal as the chromophore. Beyond that chromophore dependence, the supplied evidence does not specify construct architecture, host organisms, expression methods, or delivery strategies.
The evidence is limited to a review-level statement of optogenetic potential rather than direct validation of a specific engineered construct. No details are provided on signaling kinetics, spectral properties, expression performance, delivery, or efficacy in particular experimental systems.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Approval Evidence
1 source3 linked approval claimsfirst-pass slug animal-opsin-based-pigments
Most animal opsin-based pigments are typical G protein-coupled receptors (GPCR) and consist of a protein moiety, opsin, and 11-cis retinal as a chromophore... various opsin based-pigments... would facilitate the design and development of promising optogenetic tools for modulating GPCR-signaling.
Source:
application potentialsupports
Various opsin-based pigments, especially nonconventional visual pigments with different molecular characteristics, could facilitate the design and development of optogenetic tools for modulating GPCR signaling.
Source:
mechanism diversity summarysupports
Animal opsin families span multiple G-protein coupling classes, including Gt, Gq, Go, Gs, Gi, and Gi/Go, implying diverse light-driven GPCR-signaling cascades.
Source:
property summarysupports
Opsin-based pigments are generally bistable pigments with two stable photointerconvertible states and are therefore bleach-resistant and reusable, unlike vertebrate visual pigments which become bleached.
Source:
Comparisons
Source-stated alternatives
The abstract contrasts these pigments with vertebrate visual pigments, which become bleached. It especially highlights nonconventional visual pigments as attractive compared with bleachable vertebrate visual pigments.
Source:
The abstract contrasts these pigments with vertebrate visual pigments, which become bleached. It especially highlights nonconventional visual pigments as attractive compared with bleachable vertebrate visual pigments.
Source-backed strengths
A key strength is that most animal opsin-based pigments are inherently GPCRs, directly linking photoreception to canonical signaling machinery. The source also highlights nonconventional visual pigments as attractive candidates relative to bleachable vertebrate visual pigments, although no quantitative performance data are provided here.
Compared with nonconventional visual pigments
The abstract contrasts these pigments with vertebrate visual pigments, which become bleached. It especially highlights nonconventional visual pigments as attractive compared with bleachable vertebrate visual pigments.
Shared frame: source-stated alternative in extracted literature
Strengths here: large diversity of coupling classes is described; generally bistable, bleach-resistant, and reusable.
Relative tradeoffs: requires 11-cis retinal as chromophore; the abstract does not specify which individual opsins are best for particular applications.
Source:
The abstract contrasts these pigments with vertebrate visual pigments, which become bleached. It especially highlights nonconventional visual pigments as attractive compared with bleachable vertebrate visual pigments.
Ranked Citations
- 1.