Source 1primary paper2024
Toolkit/A. sativa LOV2 domain
A. sativa LOV2 domain
Also known as: LOV2 domain
Taxonomy: Mechanism Branch / Component. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
The A. sativa LOV2 domain is a light-responsive protein domain used as a regulatory module in engineered optogenetic switches. In a DHFR/LOV2 fusion, photoactivation thermally destabilized the fusion and lowered the catalytic transition free energy of the lit state relative to the dark state.
Usefulness & Problems
Why this is useful
This domain is useful as a genetically encoded light-sensitive regulatory element for engineering optogenetic control into fusion proteins. The supplied evidence specifically supports its use to modulate protein energetic and catalytic properties in a DHFR/LOV2 fusion upon photoactivation.
Problem solved
It helps solve the problem of introducing light-based regulation into engineered proteins. The cited work specifically addresses how to control enzyme behavior through a fused photosensory domain that changes the energetic landscape after illumination.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Component: A low-level protein part used inside a larger architecture that realizes a mechanism.
Techniques
No technique tags yet.
Target processes
No target processes tagged yet.
Input: Light
Implementation Constraints
The available evidence supports implementation as a domain fusion module in engineered proteins. Beyond its use in a DHFR/LOV2 fusion and its role as a light-based regulatory domain, the provided material does not specify construct architecture, expression context, or cofactor requirements.
The supplied evidence is narrow and centers on a DHFR/LOV2 fusion rather than broad benchmarking across targets or organisms. No specific wavelengths, cofactors, kinetics, dynamic range, or independent replication are provided in the evidence set.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
LOV2 photoactivation lowered the catalytic transition free energy of the lit state relative to the dark state in the DHFR/LOV2 fusion.
LOV2 photoactivation simultaneously: (2) lowered the catalytic transition free energy of the lit state relative to the dark state.
LOV2 photoactivation thermally destabilized the DHFR/LOV2 fusion.
LOV2 photoactivation simultaneously: (1) thermally destabilized the fusion
Approval Evidence
1 source2 linked approval claimsfirst-pass slug a-sativa-lov2-domain
The A. sativa LOV2 domain is commonly harnessed as a source of light-based regulation in engineered optogenetic switches.
Source:
photoactivation effectsupports
LOV2 photoactivation lowered the catalytic transition free energy of the lit state relative to the dark state in the DHFR/LOV2 fusion.
LOV2 photoactivation simultaneously: (2) lowered the catalytic transition free energy of the lit state relative to the dark state.
Source:
photoactivation effectsupports
LOV2 photoactivation thermally destabilized the DHFR/LOV2 fusion.
LOV2 photoactivation simultaneously: (1) thermally destabilized the fusion
Source:
Comparisons
Source-backed strengths
The evidence indicates that LOV2 can confer measurable light-dependent functional effects when fused to another protein. In the DHFR/LOV2 construct, photoactivation caused thermal destabilization and reduced the catalytic transition free energy in the lit state relative to the dark state.
Ranked Citations
- 1.