Toolkit/phyB/PIF6

phyB/PIF6

Multi-Component Switch·Research·Since 2014

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

Summary

phyB/PIF6 is a red-light-regulated optical dimerizer system composed of phyB and PIF6. In a yeast transcriptional assay, it supported light-dependent regulation and was benchmarked against phyB/PIF3, CRY2/CIB1, and TULIPs, with significant differences reported between phyB/PIF6 and phyB/PIF3 in light sensitivity and fold activation.

Usefulness & Problems

Why this is useful

This system is useful for optically controlling inducible protein interactions with red light in the context of transcriptional regulation. The available evidence specifically supports its use as one of several benchmarked optical dimerizers in yeast assays.

Source:

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions

Problem solved

phyB/PIF6 helps address the problem of regulating protein-protein association with light rather than constitutive or chemically induced interactions. The cited evidence specifically places this function in a yeast transcriptional assay where light sensitivity and activation magnitude could be compared across systems.

Source:

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions

Taxonomy & Function

Primary hierarchy

Mechanism Branch

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

Target processes

transcription

Input: Light

Implementation Constraints

The available evidence identifies phyB/PIF6 as a multi-component optical dimerizer used in yeast transcriptional assays and regulated by red light. The supplied material does not provide construct architecture, chromophore requirements, expression details, or delivery considerations.

The supplied evidence does not report absolute activation levels, dark-state background, kinetics, reversibility, or performance outside the yeast transcriptional assay. No independent replication or application-specific demonstrations for phyB/PIF6 are provided in the supplied material.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1application demosupports2014Source 1needs review

CRY2/CIB dimerizers were successfully applied using a membrane-tethered CRY2 configuration, which may allow better local control of protein interactions.

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions
Claim 2application demosupports2014Source 1needs review

CRY2/CIB dimerizers were successfully applied using a membrane-tethered CRY2 configuration, which may allow better local control of protein interactions.

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions
Claim 3application demosupports2014Source 1needs review

CRY2/CIB dimerizers were successfully applied using a membrane-tethered CRY2 configuration, which may allow better local control of protein interactions.

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions
Claim 4application demosupports2014Source 1needs review

CRY2/CIB dimerizers were successfully applied using a membrane-tethered CRY2 configuration, which may allow better local control of protein interactions.

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions
Claim 5application demosupports2014Source 1needs review

CRY2/CIB dimerizers were successfully applied using a membrane-tethered CRY2 configuration, which may allow better local control of protein interactions.

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions
Claim 6application demosupports2014Source 1needs review

CRY2/CIB dimerizers were successfully applied using a membrane-tethered CRY2 configuration, which may allow better local control of protein interactions.

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions
Claim 7application demosupports2014Source 1needs review

CRY2/CIB dimerizers were successfully applied using a membrane-tethered CRY2 configuration, which may allow better local control of protein interactions.

we demonstrate successful application of the CRY2/CIB dimerizers using a membrane-tethered CRY2, which may allow for better local control of protein interactions
Claim 8background activity comparisonsupports2014Source 1needs review

CRY2/CIB1 showed slightly less background activity in the dark than the TULIP system during regulation of a yeast MAPK signaling pathway.

with slightly less background activity in the dark observed with CRY2/CIB
Claim 9background activity comparisonsupports2014Source 1needs review

CRY2/CIB1 showed slightly less background activity in the dark than the TULIP system during regulation of a yeast MAPK signaling pathway.

with slightly less background activity in the dark observed with CRY2/CIB
Claim 10background activity comparisonsupports2014Source 1needs review

CRY2/CIB1 showed slightly less background activity in the dark than the TULIP system during regulation of a yeast MAPK signaling pathway.

with slightly less background activity in the dark observed with CRY2/CIB
Claim 11background activity comparisonsupports2014Source 1needs review

CRY2/CIB1 showed slightly less background activity in the dark than the TULIP system during regulation of a yeast MAPK signaling pathway.

with slightly less background activity in the dark observed with CRY2/CIB
Claim 12background activity comparisonsupports2014Source 1needs review

CRY2/CIB1 showed slightly less background activity in the dark than the TULIP system during regulation of a yeast MAPK signaling pathway.

with slightly less background activity in the dark observed with CRY2/CIB
Claim 13background activity comparisonsupports2014Source 1needs review

CRY2/CIB1 showed slightly less background activity in the dark than the TULIP system during regulation of a yeast MAPK signaling pathway.

with slightly less background activity in the dark observed with CRY2/CIB
Claim 14background activity comparisonsupports2014Source 1needs review

CRY2/CIB1 showed slightly less background activity in the dark than the TULIP system during regulation of a yeast MAPK signaling pathway.

with slightly less background activity in the dark observed with CRY2/CIB
Claim 15benchmark resultsupports2014Source 1needs review

CRY2/CIB1 and TULIPs showed similar responses in a yeast transcriptional assay.

but similar responses between the CRY2/CIB and TULIP systems
Claim 16benchmark resultsupports2014Source 1needs review

CRY2/CIB1 and TULIPs showed similar responses in a yeast transcriptional assay.

but similar responses between the CRY2/CIB and TULIP systems
Claim 17benchmark resultsupports2014Source 1needs review

CRY2/CIB1 and TULIPs showed similar responses in a yeast transcriptional assay.

but similar responses between the CRY2/CIB and TULIP systems
Claim 18benchmark resultsupports2014Source 1needs review

CRY2/CIB1 and TULIPs showed similar responses in a yeast transcriptional assay.

but similar responses between the CRY2/CIB and TULIP systems
Claim 19benchmark resultsupports2014Source 1needs review

CRY2/CIB1 and TULIPs showed similar responses in a yeast transcriptional assay.

but similar responses between the CRY2/CIB and TULIP systems
Claim 20benchmark resultsupports2014Source 1needs review

CRY2/CIB1 and TULIPs showed similar responses in a yeast transcriptional assay.

but similar responses between the CRY2/CIB and TULIP systems
Claim 21benchmark resultsupports2014Source 1needs review

CRY2/CIB1 and TULIPs showed similar responses in a yeast transcriptional assay.

but similar responses between the CRY2/CIB and TULIP systems
Claim 22benchmark resultsupports2014Source 1needs review

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems
Claim 23benchmark resultsupports2014Source 1needs review

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems
Claim 24benchmark resultsupports2014Source 1needs review

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems
Claim 25benchmark resultsupports2014Source 1needs review

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems
Claim 26benchmark resultsupports2014Source 1needs review

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems
Claim 27benchmark resultsupports2014Source 1needs review

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems
Claim 28benchmark resultsupports2014Source 1needs review

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems
Claim 29pathway regulation comparisonsupports2014Source 1needs review

CRY2/CIB1 and TULIP systems showed similar responses when used to regulate a yeast MAPK signaling pathway.

Further comparison of the ability of the CRY2/CIB1 and TULIP systems to regulate a yeast MAPK signaling pathway also showed similar responses
Claim 30pathway regulation comparisonsupports2014Source 1needs review

CRY2/CIB1 and TULIP systems showed similar responses when used to regulate a yeast MAPK signaling pathway.

Further comparison of the ability of the CRY2/CIB1 and TULIP systems to regulate a yeast MAPK signaling pathway also showed similar responses
Claim 31pathway regulation comparisonsupports2014Source 1needs review

CRY2/CIB1 and TULIP systems showed similar responses when used to regulate a yeast MAPK signaling pathway.

Further comparison of the ability of the CRY2/CIB1 and TULIP systems to regulate a yeast MAPK signaling pathway also showed similar responses
Claim 32pathway regulation comparisonsupports2014Source 1needs review

CRY2/CIB1 and TULIP systems showed similar responses when used to regulate a yeast MAPK signaling pathway.

Further comparison of the ability of the CRY2/CIB1 and TULIP systems to regulate a yeast MAPK signaling pathway also showed similar responses
Claim 33pathway regulation comparisonsupports2014Source 1needs review

CRY2/CIB1 and TULIP systems showed similar responses when used to regulate a yeast MAPK signaling pathway.

Further comparison of the ability of the CRY2/CIB1 and TULIP systems to regulate a yeast MAPK signaling pathway also showed similar responses
Claim 34pathway regulation comparisonsupports2014Source 1needs review

CRY2/CIB1 and TULIP systems showed similar responses when used to regulate a yeast MAPK signaling pathway.

Further comparison of the ability of the CRY2/CIB1 and TULIP systems to regulate a yeast MAPK signaling pathway also showed similar responses
Claim 35pathway regulation comparisonsupports2014Source 1needs review

CRY2/CIB1 and TULIP systems showed similar responses when used to regulate a yeast MAPK signaling pathway.

Further comparison of the ability of the CRY2/CIB1 and TULIP systems to regulate a yeast MAPK signaling pathway also showed similar responses

Approval Evidence

1 source1 linked approval claimfirst-pass slug phyb-pif6
Here, we set about to systematically benchmark the properties of four optical dimerizer systems, CRY2/CIB1, TULIPs, phyB/PIF3, and phyB/PIF6.

Source:

benchmark resultsupports

The red-light-regulated systems phyB/PIF3 and phyB/PIF6 showed significant differences in light sensitivity and fold-activation levels in a yeast transcriptional assay.

Using a yeast transcriptional assay, we find significant differences in light sensitivity and fold-activation levels between the red light regulated systems

Source:

Comparisons

Source-backed strengths

The main demonstrated strength is that phyB/PIF6 functioned as a red-light-regulated dimerizer in a comparative benchmark study. It also exhibited significantly different light sensitivity and fold-activation behavior relative to phyB/PIF3 in a yeast transcriptional assay, indicating tunable performance within the phyB/PIF family.

Ranked Citations

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

    Extracted from this source document.