Toolkit/photoactivatable inhibitor for myosin light chain kinase (MLCK)

photoactivatable inhibitor for myosin light chain kinase (MLCK)

Protein Domain·Research·Since 2014

Also known as: MLCK photoactivatable inhibitor

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

Summary

The photoactivatable inhibitor for myosin light chain kinase (MLCK) is a LOV2-based inhibitory peptide construct engineered to make MLCK inhibition light dependent. It is designed to manipulate endogenous MLCK activity in living cells through a photoswitchable inhibitory peptide architecture.

Usefulness & Problems

Why this is useful

This tool is useful for optical control of endogenous kinase signaling with temporal precision in living cells. Source evidence indicates that photoswitchable kinase inhibitors, including the MLCK-targeted construct, altered endogenous signaling and produced light-dependent changes in cell morphodynamics.

Source:

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described

Problem solved

It addresses the problem of making inhibition of endogenous MLCK conditional on light rather than constitutive. The reported design converts a kinase-inhibitory peptide into a light-responsive regulator, enabling perturbation of signaling in living cells.

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

signaling

Input: Light

Implementation Constraints

The design uses an inhibitory peptide appended to the LOV2 Jα helix so that kinase interaction is sterically blocked in the dark and enabled in the light. The available evidence supports use in living cells, but it does not specify construct sequence, illumination wavelength, expression system, or delivery method for the MLCK-specific inhibitor.

The supplied evidence identifies MLCK as a target but does not provide MLCK-specific quantitative performance metrics such as dynamic range, kinetics, reversibility, or inhibition constants. Independent replication and validation outside the cited study are not documented in the provided evidence.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1cellular effectsupports2014Source 1needs review

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.
Claim 2cellular effectsupports2014Source 1needs review

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.
Claim 3cellular effectsupports2014Source 1needs review

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.
Claim 4cellular effectsupports2014Source 1needs review

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.
Claim 5cellular effectsupports2014Source 1needs review

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.
Claim 6cellular effectsupports2014Source 1needs review

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.
Claim 7cellular effectsupports2014Source 1needs review

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.
Claim 8engineering resultsupports2014Source 1needs review

The authors developed LOV2-based analogues of kinase inhibitors whose activity is light dependent.

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.
Claim 9engineering resultsupports2014Source 1needs review

The authors developed LOV2-based analogues of kinase inhibitors whose activity is light dependent.

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.
Claim 10engineering resultsupports2014Source 1needs review

The authors developed LOV2-based analogues of kinase inhibitors whose activity is light dependent.

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.
Claim 11engineering resultsupports2014Source 1needs review

The authors developed LOV2-based analogues of kinase inhibitors whose activity is light dependent.

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.
Claim 12engineering resultsupports2014Source 1needs review

The authors developed LOV2-based analogues of kinase inhibitors whose activity is light dependent.

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.
Claim 13engineering resultsupports2014Source 1needs review

The authors developed LOV2-based analogues of kinase inhibitors whose activity is light dependent.

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.
Claim 14engineering resultsupports2014Source 1needs review

The authors developed LOV2-based analogues of kinase inhibitors whose activity is light dependent.

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.
Claim 15mechanismsupports2014Source 1needs review

Inhibitory peptides appended to the Jα helix potently inhibited kinases in the light and were sterically blocked from kinase interaction in the dark.

Inhibitory peptides were appended to the Jα helix, where they potently inhibited kinases in the light but were sterically blocked from kinase interaction in the dark.
Claim 16mechanismsupports2014Source 1needs review

Inhibitory peptides appended to the Jα helix potently inhibited kinases in the light and were sterically blocked from kinase interaction in the dark.

Inhibitory peptides were appended to the Jα helix, where they potently inhibited kinases in the light but were sterically blocked from kinase interaction in the dark.
Claim 17mechanismsupports2014Source 1needs review

Inhibitory peptides appended to the Jα helix potently inhibited kinases in the light and were sterically blocked from kinase interaction in the dark.

Inhibitory peptides were appended to the Jα helix, where they potently inhibited kinases in the light but were sterically blocked from kinase interaction in the dark.
Claim 18mechanismsupports2014Source 1needs review

Inhibitory peptides appended to the Jα helix potently inhibited kinases in the light and were sterically blocked from kinase interaction in the dark.

Inhibitory peptides were appended to the Jα helix, where they potently inhibited kinases in the light but were sterically blocked from kinase interaction in the dark.
Claim 19mechanismsupports2014Source 1needs review

Inhibitory peptides appended to the Jα helix potently inhibited kinases in the light and were sterically blocked from kinase interaction in the dark.

Inhibitory peptides were appended to the Jα helix, where they potently inhibited kinases in the light but were sterically blocked from kinase interaction in the dark.
Claim 20mechanismsupports2014Source 1needs review

Inhibitory peptides appended to the Jα helix potently inhibited kinases in the light and were sterically blocked from kinase interaction in the dark.

Inhibitory peptides were appended to the Jα helix, where they potently inhibited kinases in the light but were sterically blocked from kinase interaction in the dark.
Claim 21mechanismsupports2014Source 1needs review

Inhibitory peptides appended to the Jα helix potently inhibited kinases in the light and were sterically blocked from kinase interaction in the dark.

Inhibitory peptides were appended to the Jα helix, where they potently inhibited kinases in the light but were sterically blocked from kinase interaction in the dark.
Claim 22tool descriptionsupports2014Source 1needs review

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described
Claim 23tool descriptionsupports2014Source 1needs review

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described
Claim 24tool descriptionsupports2014Source 1needs review

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described
Claim 25tool descriptionsupports2014Source 1needs review

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described
Claim 26tool descriptionsupports2014Source 1needs review

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described
Claim 27tool descriptionsupports2014Source 1needs review

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described
Claim 28tool descriptionsupports2014Source 1needs review

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described

Approval Evidence

1 source2 linked approval claimsfirst-pass slug photoactivatable-inhibitor-for-myosin-light-chain-kinase-mlck
Photoactivatable inhibitors for ... myosin light chain kinase (MLCK)

Source:

cellular effectsupports

These photoswitchable inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

These inhibitors altered endogenous signaling in living cells and produced light-dependent changes in cell morphodynamics.

Source:

tool descriptionsupports

Photoactivatable inhibitors for PKA and MLCK are described.

Photoactivatable inhibitors for cyclic-AMP dependent kinase (PKA) and myosin light chain kinase (MLCK) are described

Source:

Comparisons

Source-backed strengths

The construct belongs to a class of LOV2-based kinase inhibitor analogues whose activity is light dependent. Reported photoswitchable inhibitors potently inhibited kinases in the light, were sterically blocked from kinase interaction in the dark, and were sufficient to alter endogenous signaling and cell morphodynamics in living cells.

Source:

Using the photoresponse of the LOV2 domain of Avena sativa phototropin 1, we developed analogues of kinase inhibitors whose activity is light dependent.

Ranked Citations

  1. 1.
    StructuralSource 1ACS Synthetic Biology2014Claim 1Claim 2Claim 3

    Extracted from this source document.