Toolkit/magnetic-field dependent 13C NMR spectroscopy

magnetic-field dependent 13C NMR spectroscopy

Assay Method·Research·Since 2014

Also known as: photo-CIDNP studies at four different magnetic fields, solution 13C NMR spectra

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

Summary

Magnetic-field dependent 13C NMR spectroscopy is a solution-state photo-CIDNP assay in which 13C NMR spectra are acquired across multiple magnetic fields under light activation. In the cited 2014 study, it was applied to the LOV2-C450A domain of phototropin over 4.7–11.8 T to detect field-dependent 13C photo-CIDNP signals and support interpretation involving a novel triplet mechanism.

Usefulness & Problems

Why this is useful

This assay is useful for probing light-driven spin-dependent polarization effects in flavoproteins by comparing 13C photo-CIDNP behavior across magnetic field strengths. The source states that the identified triplet mechanism opens new means of studying the electronic structures of active cofactors in flavoproteins at atomic resolution.

Problem solved

It addresses the problem of mechanistically interpreting photo-CIDNP signals in a protein system by using magnetic-field dependence as a discriminating variable. In the reported application, field-dependent solution 13C NMR data from LOV2-C450A were used to interpret the observed photo-CIDNP in terms of solid-state mechanisms, including a novel triplet mechanism.

Problem links

Need precise spatiotemporal control with light input

Derived

Magnetic-field dependent 13C NMR spectroscopy, as described here, is a photo-CIDNP assay performed in solution 13C NMR across magnetic fields from 4.7 to 11.8 T. In the cited study, it was applied to the LOV2-C450A domain of phototropin to detect and interpret field-dependent 13C photo-CIDNP signals, including evidence for a novel triplet mechanism.

Taxonomy & Function

Primary hierarchy

Technique Branch

Method: A concrete measurement method used to characterize an engineered system.

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: sensor

The reported implementation used solution 13C NMR with photo-CIDNP measurements under light input at four magnetic fields spanning 4.7 to 11.8 T. The demonstrated biological system was the LOV2-C450A domain of phototropin, but the supplied evidence does not provide further construct, cofactor, or sample preparation details.

The evidence is limited to a single cited study in the LOV2-C450A domain of phototropin, so generality beyond this flavoprotein context is not established here. Practical performance characteristics such as sensitivity, throughput, sample requirements, and robustness across other targets are not described in the supplied evidence.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 2field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 3field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 4field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 5field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 6field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 7field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 8field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 9field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 10field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 11field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 12field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 13field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 14field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 15field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 16field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 17field dependent agreementsupports2014Source 1needs review

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts
Claim 18mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 19mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 20mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 21mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 22mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 23mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 24mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 25mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 26mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 27mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 28mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 29mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 30mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 31mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 32mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 33mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 34mechanistic interpretationsupports2014Source 1needs review

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism
Claim 35method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 36method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 37method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 38method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 39method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 40method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 41method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 42method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 43method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 44method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 45method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 46method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 47method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 48method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 49method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 50method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution
Claim 51method potentialsupports2014Source 1needs review

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution

Approval Evidence

1 source3 linked approval claimsfirst-pass slug magnetic-field-dependent-13c-nmr-spectroscopy
photo-CIDNP observed in solution 13C NMR spectra ... photo-CIDNP studies were performed at four different magnetic fields ranging from 4.7 to 11.8 T

Source:

field dependent agreementsupports

At high magnetic fields, the calculated enhancement factors of 3F agree favorably with experimental counterparts.

whereas at high magnetic fields, the calculated enhancement factors of 3F agree favorably with their experimental counterparts

Source:

mechanistic interpretationsupports

Photo-CIDNP observed in solution 13C NMR spectra of LOV2-C450A can be reliably interpreted in terms of solid-state mechanisms including a novel triplet mechanism.

demonstrate that photo-CIDNP observed in solution 13C NMR spectra can reliably be interpreted in terms of solid-state mechanisms including a novel triplet mechanism

Source:

method potentialsupports

The novel triplet mechanism opens new means of studying electronic structures of active cofactors in flavoproteins at atomic resolution.

the novel triplet mechanism opens up new means of studying electronic structures of the active cofactors in these proteins at atomic resolution

Source:

Comparisons

Source-backed strengths

The method provided experimentally observable field-dependent 13C photo-CIDNP data across four magnetic fields from 4.7 to 11.8 T. At high magnetic fields, calculated enhancement factors of 3F agreed favorably with experimental values, supporting the mechanistic interpretation in the studied system.

magnetic-field dependent 13C NMR spectroscopy and native green gel system address a similar problem space.

Shared frame: same top-level item type; same primary input modality: light

magnetic-field dependent 13C NMR spectroscopy and open-source microplate reader address a similar problem space.

Shared frame: same top-level item type; same primary input modality: light

magnetic-field dependent 13C NMR spectroscopy and plant transcriptome profiling address a similar problem space.

Shared frame: same top-level item type; same primary input modality: light

Ranked Citations

  1. 1.
    StructuralSource 1The Journal of Physical Chemistry B2014Claim 17Claim 2Claim 16

    Extracted from this source document.