Source 1review2013Biochimica et Biophysica Acta (BBA) - Bioenergetics
Toolkit/nonconventional visual pigments
nonconventional visual pigments
Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
Nonconventional visual pigments are opsin-based light-sensitive pigments proposed as a source of optogenetic actuators for controlling G protein-coupled receptor signaling. A 2013 review highlights their diverse molecular characteristics as potentially useful for designing light-regulated GPCR tools.
Usefulness & Problems
Why this is useful
These pigments are useful because they expand the molecular diversity available for optogenetic modulation of GPCR pathways. The cited review specifically suggests that their differing molecular characteristics could facilitate development of promising light-controlled signaling tools.
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Nonconventional visual pigments are presented as a particularly useful subset of opsin-based pigments for optogenetic engineering. Their differing molecular characteristics are suggested to broaden controllable GPCR-signaling behaviors.
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design of optogenetic tools
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modulating GPCR signaling with diverse molecular characteristics
Problem solved
They address the need for a broader repertoire of optogenetic actuators for GPCR signaling. The supplied evidence supports their value as candidate building blocks for designing tools with varied light-responsive signaling behaviors, but does not define pathway-specific solutions.
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They help address the need for more varied light-controlled GPCR actuators. The review suggests they can facilitate design and development of promising optogenetic tools.
Source:
expanding the design space for optogenetic GPCR control
Problem links
expanding the design space for optogenetic GPCR control
LiteratureThey help address the need for more varied light-controlled GPCR actuators. The review suggests they can facilitate design and development of promising optogenetic tools.
Source:
They help address the need for more varied light-controlled GPCR actuators. The review suggests they can facilitate design and development of promising optogenetic tools.
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
The provided evidence places these tools within opsin-based pigments, implying an opsin protein architecture and retinal chromophore dependence. However, the supplied text does not specify construct design, expression system, delivery method, or cofactor supplementation requirements for implementation.
The evidence is limited to a review-level statement about application potential rather than direct experimental validation of a specific engineered construct. No individual pigments, spectral properties, G-protein coupling profiles, kinetics, or comparative optogenetic performance data are given in the provided text.
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 source1 linked approval claimfirst-pass slug nonconventional-visual-pigments
Accumulated evidence reveals the molecular property of opsin-based pigments, particularly non-conventional visual pigments including non-visual pigments... various opsin based-pigments, especially nonconventional visual pigments having different molecular characteristics would facilitate the design and development of promising optogenetic tools for modulating GPCR-signaling.
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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.
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Comparisons
Source-stated alternatives
The abstract contrasts them implicitly with vertebrate visual pigments that bleach. It also situates them among broader opsin-based pigment classes with different coupling modes.
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The abstract contrasts them implicitly with vertebrate visual pigments that bleach. It also situates them among broader opsin-based pigment classes with different coupling modes.
Source-backed strengths
The main reported strength is molecular diversity within opsin-based pigments, especially among nonconventional visual pigments. This diversity is presented as advantageous for tool design and development for GPCR-signaling modulation, but no quantitative performance metrics are provided in the supplied evidence.
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highlighted as especially promising for optogenetic tool development
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described as having different molecular characteristics
Compared with CfRhPDE1
nonconventional visual pigments and CfRhPDE1 address a similar problem space because they share signaling.
Shared frame: same top-level item type; shared target processes: signaling; same primary input modality: light
Relative tradeoffs: looks easier to implement in practice; may avoid an exogenous cofactor requirement.
Compared with NIR Rac1 biosensor
nonconventional visual pigments and NIR Rac1 biosensor address a similar problem space because they share signaling.
Shared frame: same top-level item type; shared target processes: signaling; same primary input modality: light
Relative tradeoffs: looks easier to implement in practice; may avoid an exogenous cofactor requirement.
Compared with photobiomodulation therapy
nonconventional visual pigments and photobiomodulation therapy address a similar problem space because they share signaling.
Shared frame: same top-level item type; shared target processes: signaling; same primary input modality: light
Relative tradeoffs: looks easier to implement in practice; may avoid an exogenous cofactor requirement.
Ranked Citations
- 1.