Source 1primary paper2022
Toolkit/BcLOV4 photoreceptor
BcLOV4 photoreceptor
Also known as: BcLOV4
Taxonomy: Mechanism Branch / Component. Workflows sit above the mechanism and technique branches rather than replacing them.
Summary
BcLOV4 is a blue-light-responsive photoreceptor domain that undergoes both clustering and plasma membrane translocation. These coupled light-induced behaviors have been harnessed as a single-component optogenetic module to control protein localization and downstream signaling.
Usefulness & Problems
Why this is useful
BcLOV4 is useful because one photoreceptor domain provides two coordinated outputs under blue light: clustering and plasma membrane recruitment. The source literature states that this dual behavior can be used to generate new optogenetic tools and to enhance existing ones.
Source:
We demonstrate that dual translocation and clustering can be harnessed for novel single-component optogenetic tools
Problem solved
BcLOV4 helps solve the problem of building single-component optogenetic systems for light-controlled localization and signaling. The reported causal coupling between clustering and membrane translocation also provides a way to increase signaling output and light sensitivity through stronger clustering.
Source:
We demonstrate that dual translocation and clustering can be harnessed for novel single-component optogenetic tools
Problem links
Need conditional control of signaling activity
DerivedBcLOV4 is a blue-light-responsive photoreceptor domain that undergoes both clustering and translocation to the plasma membrane. These coupled light-induced behaviors have been harnessed as a single-component optogenetic module for controlling localization and signaling.
Need conditional recombination or state switching
DerivedBcLOV4 is a blue-light-responsive photoreceptor domain that undergoes both clustering and translocation to the plasma membrane. These coupled light-induced behaviors have been harnessed as a single-component optogenetic module for controlling localization and signaling.
Need inducible protein relocalization or recruitment
DerivedBcLOV4 is a blue-light-responsive photoreceptor domain that undergoes both clustering and translocation to the plasma membrane. These coupled light-induced behaviors have been harnessed as a single-component optogenetic module for controlling localization and signaling.
Need precise spatiotemporal control with light input
DerivedBcLOV4 is a blue-light-responsive photoreceptor domain that undergoes both clustering and translocation to the plasma membrane. These coupled light-induced behaviors have been harnessed as a single-component optogenetic module for controlling localization and signaling.
Taxonomy & Function
Primary hierarchy
Mechanism Branch
Component: A low-level protein part used inside a larger architecture that realizes a mechanism.
Mechanisms
causal coupling between clustering and membrane translocationcausal coupling between clustering and membrane translocationlight-induced clusteringlight-induced clusteringlight-induced plasma membrane translocationlight-induced plasma membrane translocationTechniques
No technique tags yet.
Target processes
localizationrecombinationsignalingInput: Light
Implementation Constraints
cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: spectral hardware requirementoperating role: regulatorswitch architecture: single chain
BcLOV4 has been implemented as a single-component optogenetic module by domain fusion in tool-engineering contexts. The available evidence specifies blue light as the input and indicates use for localization, signaling, and recombination, but it does not provide construct architecture, cofactor requirements, or delivery details.
The supplied evidence establishes blue-light-induced clustering, plasma membrane translocation, and their causal linkage, but it does not provide detailed kinetic, spectral, organism-specific, or structural performance data. Independent replication is not documented in the provided evidence.
Validation
Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication
Supporting Sources
Ranked Claims
Dual translocation and clustering of BcLOV4 can be harnessed to build novel single-component optogenetic tools.
We demonstrate that dual translocation and clustering can be harnessed for novel single-component optogenetic tools
BcLOV4 clusters and translocates to the plasma membrane in response to blue light.
Here we show that the BcLOV4 photoreceptor both clusters and translocates to the plasma membrane in response to blue light
Clustering and membrane translocation of BcLOV4 are causally linked.
We further find that clustering and membrane translocation are causally linked.
Stronger clustering increases translocation magnitude, downstream signaling, light sensitivity, and reduces the expression level needed for strong signal activation.
Stronger clustering increased the magnitude of translocation and downstream signaling, increased sensitivity to light by ~3-4-fold, and decreased the expression levels needed for strong signal activation.
light sensitivity increase 3-4-fold
Light-induced clustering of BcLOV4 provides a strategy to generate new optogenetic tools and enhance existing ones.
Thus light-induced clustering of BcLOV4 provides a strategy to generate a new class of optogenetic tools and to enhance existing ones.
Approval Evidence
1 source5 linked approval claimsfirst-pass slug bclov4-photoreceptor
Here we show that the BcLOV4 photoreceptor both clusters and translocates to the plasma membrane in response to blue light
Source:
applicationsupports
Dual translocation and clustering of BcLOV4 can be harnessed to build novel single-component optogenetic tools.
We demonstrate that dual translocation and clustering can be harnessed for novel single-component optogenetic tools
Source:
behaviorsupports
BcLOV4 clusters and translocates to the plasma membrane in response to blue light.
Here we show that the BcLOV4 photoreceptor both clusters and translocates to the plasma membrane in response to blue light
Source:
mechanismsupports
Clustering and membrane translocation of BcLOV4 are causally linked.
We further find that clustering and membrane translocation are causally linked.
Source:
optimization effectsupports
Stronger clustering increases translocation magnitude, downstream signaling, light sensitivity, and reduces the expression level needed for strong signal activation.
Stronger clustering increased the magnitude of translocation and downstream signaling, increased sensitivity to light by ~3-4-fold, and decreased the expression levels needed for strong signal activation.
Source:
platform strategysupports
Light-induced clustering of BcLOV4 provides a strategy to generate new optogenetic tools and enhance existing ones.
Thus light-induced clustering of BcLOV4 provides a strategy to generate a new class of optogenetic tools and to enhance existing ones.
Source:
Comparisons
Source-backed strengths
The literature reports that BcLOV4 combines blue-light-induced clustering with plasma membrane translocation in a single domain. Stronger clustering was reported to increase translocation magnitude, increase downstream signaling, increase light sensitivity, and reduce the expression level required for strong signal activation.
Source:
Stronger clustering increased the magnitude of translocation and downstream signaling, increased sensitivity to light by ~3-4-fold, and decreased the expression levels needed for strong signal activation.
Compared with AsLOV2
BcLOV4 photoreceptor and AsLOV2 address a similar problem space because they share localization, recombination, signaling.
Shared frame: same top-level item type; shared target processes: localization, recombination, signaling; same primary input modality: light
Relative tradeoffs: appears more independently replicated; looks easier to implement in practice; may reduce component-count burden.
Compared with Beggiatoa photoactivated adenylyl cyclase
BcLOV4 photoreceptor and Beggiatoa photoactivated adenylyl cyclase address a similar problem space because they share localization, recombination, signaling.
Shared frame: same top-level item type; shared target processes: localization, recombination, signaling; same primary input modality: light
Relative tradeoffs: appears more independently replicated; looks easier to implement in practice.
Compared with p63RhoGEF GEF domain
BcLOV4 photoreceptor and p63RhoGEF GEF domain address a similar problem space because they share localization, recombination, signaling.
Shared frame: same top-level item type; shared target processes: localization, recombination, signaling; same primary input modality: light
Ranked Citations
- 1.