نتایج جستجو برای: imidazolone
تعداد نتایج: 93 فیلتر نتایج به سال:
The excited-state dynamics of five derivatives of the GFP-chromophore, which differ by the position and nature of their substituents, has been investigated in solvents of various viscosity and polarity and in rigid media using femtosecond-resolved spectroscopy. In polar solvents of low viscosity, like acetonitrile or methanol, the fluorescence decays of all compounds are multiexponential, with ...
Photoactivatable fluorescent proteins (PAFPs) are required for super-resolution imaging of live cells. Recently, the first red PAFP, PAmCherry1, was reported, which complements the photo-activatable GFP by providing a red super-resolution color. PAmCherry1 is originally "dark" but exhibits red fluorescence after UV-violet light irradiation. To define the structural basis of PAmCherry1 photoacti...
An enzyme showing l-histidine oxidase (HisO) activity by the formation of hydrogen peroxide was newly purified from Achromobacter sp. TPU 5009. This found to be a heterodimer two proteins (molecular mass, 53.8 and 58.3 kDa), partial determination which indicated they are homologs ammonia-lyase (AchHAL) urocanate hydratase (AchURO). The stable in pH range 5.0–11.0, with >90% original maintained ...
A new catalyst was prepared by promoting fly ash with hydrogen peroxide. The catalytic activity of H2O2 promoted fly ash (HPFA) was evaluated by synthesis 5(4H)-oxazolone and imidazolone derivatives under solvent free conditions. The possible mechanisms of synthesis reactions were also suggested. These proposed methods benefit in terms of low-cost catalyst, high yields, ease of workup, survival...
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