Rapid Scan Epr
Rapid Scan Epr - Related Videos
08:01
Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo
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Cited by 11 •
2016
A new electron paramagnetic resonance (EPR) method, rapid scan EPR (RS-EPR), is demonstrated for 2D spectral spatial imaging which is superior to the traditional continuous wave (CW) technique and opens new venues for in vivo imaging. Results are demonstrated at 250 MHz, but the technique is applicable at any frequency.
11:07
Electron Paramagnetic Resonance (EPR) Spectroscopy
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2023
Source: David C. Powers, Tamara M. Powers, Texas A&M In this video, we will learn the basic principles behind Electron Paramagnetic Resonance (EPR). We will use EPR spectroscopy to study how dibutylhydroxy toluene (BHT) behaves as an antioxidant in the autoxidation of aliphatic aldehydes.
06:01
EPR Monitored Redox Titration of the Cofactors of Saccharomyces cerevisiae Nar1
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Cited by 6 •
2014
The goal of this protocol is to use electron paramagnetic resonance (EPR) monitored redox titrations to identify different cofactors of Saccharomyces cerevisiae Nar1. Redox titrations offer a very robust way to obtain midpoint potentials of different redox active cofactors in enzymes and proteins.
11:19
Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels
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Cited by 7 •
2016
This article describes methods for site-directed spin labeling and reconstitution of pentameric ligand-gated channels for Electron Paramagnetic Resonance studies. This protocol can be adapted for any membrane protein. The reconstitution method described here can also be used for patch-clamp measurements of macroscopic and single-channel currents in a defined lipid system.
02:28
Leaky Scanning
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2020
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
FAQs
The rapid field sweep samples electron-spin resonance conditions across a short measurement interval rather than treating the sample as steady. Continuous microwave-absorption detection records how the response changes during that sweep. Signal processing converts these time-dependent measurements into an EPR spectrum while retaining information about transient spin dynamics, allowing short-lived species to be examined.
Paramagnetic molecules provide the spin response that rapid scan EPR measures, while microwave absorption supplies the observable signal. As the magnetic field passes through resonance conditions, differences in absorption reflect electron-spin behavior. This makes the technique useful for examining transient spin behavior in chemically or biologically complex samples, where relevant species may not persist at steady state.
Compared with measurements focused on steady-state behavior, rapid scan EPR is suited to reactions that change during observation. Its rapid acquisition approach can follow nonsteady-state processes and expose time-dependent spin dynamics rather than only a persistent signal. That distinction matters in bioengineering studies of redox biology and oxygen-related processes, where radical or paramagnetic behavior may evolve as a reaction proceeds.
A measurement follows a linked sequence: the magnetic field is swept through electron-spin resonance conditions, microwave absorption is continuously monitored, and the recorded response is processed into an EPR spectrum. Interpreting the result therefore requires considering both the reconstructed spectrum and the transient spin dynamics captured during acquisition. This workflow connects an instrument signal to the behavior of short-lived species.
Rapid scan EPR can provide information about free radicals, spin-labeled proteins, metalloproteins, and oxygen-related processes in complex samples. These targets extend the method beyond simple chemical mixtures: researchers can examine radical chemistry, protein-associated spin behavior, metal-containing biomolecules, and oxygen-linked phenomena within bioengineering systems.
Its capacity to monitor nonsteady-state reactions supports studies of biosensors and engineered materials while preserving information about transient spin dynamics. This makes it possible to investigate short-lived paramagnetic behavior in designed systems, alongside applications in biomolecular structure and redox biology. The method is especially relevant when a bioengineering question involves changing radical, metal, or oxygen-related states rather than only stable species.