Optical detection of magnetic resonance in a single molecule

Article Abstract:

The optical detection of the magnetic resonance of a single pentacene molecule was accomplished by applying a combination of single-molecule fluorescence spectroscopy and optically detected magentic resonance on a pentacene molecule embedded in a p-terphenyl host crystal. Two transitions between metastable triplet state sublevels, out of the three possible, were observed. Analysis of the spectral lineshapes suggest that the proton nuclear spin states were altered as the measurements were being performed. This resulted in spectral diffusion within the magnetic resonance line.

Usage, Nuclear magnetic resonance, Molecular spectroscopy

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Non-genetic propagation of strain-specific properties of scrapie prion protein

Article Abstract:

Self-propagation of PrP(super Sc) polymers is the molecular basis of scrapie strains. The PrP(super sc) from the hyper and drowsy strains of hamster transmissible mink encephalopathy (TME) converts the identical unglycosylated PrP(super C) precursor into two distinct sets of proteinase K-resistant PrP products in a cell-free system.

Analysis, Genetic aspects, Proteins, Molecular structure, Scrapie, Slow virus diseases

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