Toolkit/LOV-LexA

LOV-LexA

Multi-Component Switch·Research·Since 2022

Also known as: light-gated LOV-LexA, LOV-LexA tool

Taxonomy: Mechanism Branch / Architecture. Workflows sit above the mechanism and technique branches rather than replacing them.

Summary

LOV-LexA is a light-gated LexA-based expression system for Drosophila that fuses the bacterial LexA transcription factor to a plant-derived LOV photosensitive domain and a fluorescent protein. Blue light uncages a nuclear localization signal, drives nuclear translocation, and initiates LexAop transgene expression with spatial and temporal control.

Usefulness & Problems

Why this is useful

This tool provides optical control over transgene expression, enabling spatially and temporally restricted activation of LexAop reporters or effectors in Drosophila tissues. It is reported to be compatible with GAL4 and Split-GAL4 drivers, adding an intersectional genetics layer for light-controlled access to specific cells across flies.

Source:

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.

Source:

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.

Problem solved

LOV-LexA addresses the need for noninvasive, light-dependent control of gene expression in defined cells and time windows. The reported system enables blue-light-triggered LexAop expression in larval fat body and in pupal and adult neurons.

Source:

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.

Problem links

Need inducible protein relocalization or recruitment

Derived

LOV-LexA is a light-gated LexA-based expression system that combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein. Blue light uncages a nuclear localization signal, driving nuclear translocation and initiation of LexAop transgene expression for spatial and temporal control in Drosophila tissues.

Need precise spatiotemporal control with light input

Derived

LOV-LexA is a light-gated LexA-based expression system that combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein. Blue light uncages a nuclear localization signal, driving nuclear translocation and initiation of LexAop transgene expression for spatial and temporal control in Drosophila tissues.

Need tighter control over gene expression timing or amplitude

Derived

LOV-LexA is a light-gated LexA-based expression system that combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein. Blue light uncages a nuclear localization signal, driving nuclear translocation and initiation of LexAop transgene expression for spatial and temporal control in Drosophila tissues.

Taxonomy & Function

Primary hierarchy

Mechanism Branch

Architecture: A composed arrangement of multiple parts that instantiates one or more mechanisms.

Techniques

No technique tags yet.

Target processes

localizationtranscription

Input: Light

Implementation Constraints

cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: multi component delivery burdenimplementation constraint: spectral hardware requirementoperating role: regulatorswitch architecture: multi componentswitch architecture: uncaging

The construct combines LexA with a plant-derived LOV photosensitive domain and a fluorescent protein, and its function depends on blue light exposure. The reported output is LexAop transgene expression in Drosophila, and the system is described as usable with GAL4 and Split-GAL4 drivers.

The supplied evidence is limited to a single 2022 publication and does not provide quantitative performance metrics such as induction kinetics, dynamic range, leakiness, or reversibility. Practical constraints such as light penetration, phototoxicity, and construct size are not described in the provided evidence.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 2compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 3compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 4compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 5compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 6compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 7compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 8compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 9compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 10compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 11compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 12compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 13compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 14compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 15compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 16compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 17compatibilitysupports2022Source 1needs review

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.
Claim 18functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 19functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 20functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 21functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 22functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 23functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 24functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 25functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 26functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 27functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 28functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 29functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 30functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 31functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 32functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 33functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 34functional capabilitysupports2022Source 1needs review

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.
Claim 35mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 36mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 37mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 38mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 39mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 40mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 41mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 42mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 43mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 44mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 45mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 46mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 47mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 48mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 49mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 50mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 51mechanismsupports2022Source 1needs review

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.
Claim 52tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 53tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 54tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 55tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 56tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 57tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 58tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 59tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 60tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 61tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 62tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 63tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 64tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 65tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 66tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 67tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.
Claim 68tool developmentsupports2022Source 1needs review

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.

Approval Evidence

1 source4 linked approval claimsfirst-pass slug lov-lexa
we developed the light-gated expression system LOV-LexA

Source:

compatibilitysupports

LOV-LexA is ready to use with GAL4 and Split-GAL4 drivers and provides a layer of intersectional genetics for light-controlled access to specific cells across flies.

The LOV-LexA tool is ready to use with GAL4 and Split-GAL4 drivers in its current form and constitutes another layer of intersectional genetics that provides light-controlled genetic access to specific cells across flies.

Source:

functional capabilitysupports

LOV-LexA enables spatial and temporal control of LexAop transgene expression with blue light in larval fat body and pupal and adult neurons.

LOV-LexA enables spatial and temporal control of expression of transgenes under LexAop sequences in larval fat body and pupal and adult neurons with blue light.

Source:

mechanismsupports

LOV-LexA combines the bacterial LexA transcription factor with a plant-derived LOV photosensitive domain and a fluorescent protein, and blue light exposure uncages a nuclear localization signal leading to nuclear translocation and transcription initiation.

We combined the bacterial LexA transcription factor with the plant-derived light, oxygen, or voltage photosensitive domain and a fluorescent protein. Exposure to blue light uncages a nuclear localizing signal in the C-terminal of the light, oxygen, or voltage domain and leads to the translocation of LOV-LexA to the nucleus, with the subsequent initiation of transcription.

Source:

tool developmentsupports

The authors developed the light-gated expression system LOV-LexA to access the same cells within a given expression pattern consistently across fruit flies.

To access the same cells within a given expression pattern consistently across fruit flies, we developed the light-gated expression system LOV-LexA.

Source:

Comparisons

Source-backed strengths

The system was specifically developed for spatial and temporal control of expression with blue light. Reported validation includes function in multiple Drosophila contexts, including larval fat body and pupal and adult neurons, and compatibility with GAL4 and Split-GAL4 driver frameworks.

Compared with Cry2

LOV-LexA and Cry2 address a similar problem space because they share localization, transcription.

Shared frame: same top-level item type; shared target processes: localization, transcription; shared mechanisms: conformational uncaging, conformational_uncaging; same primary input modality: light

Strengths here: may avoid an exogenous cofactor requirement.

Relative tradeoffs: appears more independently replicated.

Compared with FUN-LOV

LOV-LexA and FUN-LOV address a similar problem space because they share localization, transcription.

Shared frame: same top-level item type; shared target processes: localization, transcription; shared mechanisms: transcriptional activation; same primary input modality: light

Relative tradeoffs: appears more independently replicated; looks easier to implement in practice.

Compared with iLID/SspB

LOV-LexA and iLID/SspB address a similar problem space because they share localization, transcription.

Shared frame: same top-level item type; shared target processes: localization, transcription; shared mechanisms: conformational uncaging, conformational_uncaging; same primary input modality: light

Relative tradeoffs: appears more independently replicated; looks easier to implement in practice.

Ranked Citations

  1. 1.
    StructuralSource 1G3 Genes Genomes Genetics2022Claim 11Claim 12Claim 11

    Extracted from this source document.