Toolkit/NC80 motif

NC80 motif

Protein Domain·Research·Since 2007

Also known as: NC80

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

Summary

NC80 is an 80-residue motif from Arabidopsis CRY2 that is sufficient to confer CRY2 physiological function. Source evidence indicates that blue light activates CRY2 by a phosphorylation-associated conformational change that derepresses the NC80 motif.

Usefulness & Problems

Why this is useful

NC80 provides a minimal CRY2-derived functional element for dissecting how cryptochrome photoactivation is encoded within a short sequence segment. Its activity in a GUS-NC80 fusion and its sufficiency for CRY2 physiological function make it useful for testing domain transfer and light-regulated derepression models.

Source:

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.

Problem solved

This motif helps localize the functionally critical output region of Arabidopsis CRY2 to a defined 80-residue segment. It addresses the mechanistic problem of how blue light and CRY2 phosphorylation are linked to activation through derepression of a specific motif.

Problem links

Need precise spatiotemporal control with light input

Derived

NC80 is an 80-residue motif from Arabidopsis CRY2 that is sufficient to confer CRY2 physiological function. Source evidence indicates that blue light activates CRY2 by derepressing this motif through a phosphorylation-associated conformational change.

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

cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationimplementation constraint: spectral hardware requirementoperating role: actuatorswitch architecture: uncaging

The reported implementation involved a GUS-NC80 fusion protein expressed in transgenic plants. Blue light-induced CRY2 phosphorylation was implicated mechanistically, but the constitutively active GUS-NC80 fusion was described as unphosphorylated, indicating that motif exposure rather than phosphorylation of the isolated fusion correlated with activity.

Evidence is limited to a single cited study in Arabidopsis CRY2 and a GUS fusion context. The available evidence does not define transferability beyond the reported constructs, quantitative performance, or validation in non-plant systems.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 2activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 3activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 4activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 5activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 6activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 7activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 8activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 9activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 10activity statesupports2007Source 1needs review

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated.

The GUS-NC80 fusion protein expressed in transgenic plants is constitutively active but unphosphorylated
Claim 11functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 12functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 13functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 14functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 15functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 16functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 17functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 18functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 19functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 20functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 21functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 22functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 23functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 24functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 25functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 26functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 27functional sufficiencysupports2007Source 1needs review

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.
Claim 28mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 29mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 30mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 31mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 32mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 33mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 34mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 35mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 36mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 37mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 38mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 39mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 40mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 41mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 42mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 43mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 44mechanistic inferencesupports2007Source 1needs review

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif
Claim 45requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 46requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 47requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 48requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 49requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 50requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 51requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 52requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 53requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 54requirement for phosphorylationsupports2007Source 1needs review

The CRY2 C-terminal tail is required for blue light-induced CRY2 phosphorylation but not for CRY2 activity.

the CRY2 C-terminal tail was found to be required for the blue light-induced CRY2 phosphorylation but not for the CRY2 activity
Claim 55structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 56structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 57structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 58structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 59structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 60structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 61structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 62structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 63structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 64structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 65structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 66structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 67structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 68structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 69structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 70structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.
Claim 71structural modelsupports2007Source 1needs review

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.

Approval Evidence

1 source3 linked approval claimsfirst-pass slug nc80-motif
an 80-residue motif, referred to as NC80

Source:

functional sufficiencysupports

The 80-residue NC80 motif was sufficient to confer the physiological function of CRY2.

Our results showed that an 80-residue motif, referred to as NC80, was sufficient to confer the physiological function of CRY2.

Source:

mechanistic inferencesupports

Blue light-induced CRY2 phosphorylation likely causes a conformational change that derepresses the NC80 motif.

suggesting that the blue light-induced CRY2 phosphorylation causes a conformational change to derepress the NC80 motif

Source:

structural modelsupports

In unphosphorylated CRY2, the PHR domain and C-terminal tail form a closed conformation that suppresses the NC80 motif, whereas blue light-induced phosphorylation promotes an open conformation that derepresses NC80 and triggers signal transduction.

We propose that the PHR domain and the C-terminal tail of the unphosphorylated CRY2 form a "closed" conformation to suppress the NC80 motif in the absence of light. In response to blue light, the C-terminal tail of CRY2 is phosphorylated and electrostatically repelled from the surface of the PHR domain to form an "open" conformation, resulting in derepression of the NC80 motif and signal transduction to trigger photomorphogenic responses.

Source:

Comparisons

Source-backed strengths

The key strength is functional sufficiency: the 80-residue NC80 motif was reported to confer the physiological function of CRY2. In transgenic plants, a GUS-NC80 fusion was constitutively active despite being unphosphorylated, supporting the idea that exposure of this motif is sufficient for activity.

NC80 motif and Avena sativa phototropin LOV2 domain address a similar problem space.

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

NC80 motif and Light-Oxygen-Voltage domain address a similar problem space.

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

NC80 motif and photoswitchable inhibitory peptides address a similar problem space.

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

Ranked Citations

  1. 1.
    StructuralSource 1Proceedings of the National Academy of Sciences2007Claim 10Claim 7Claim 7

    Seeded from load plan for claim c5.