نتایج جستجو برای: isomerization of chloro
تعداد نتایج: 21165937 فیلتر نتایج به سال:
The lifetimes of methyl 4-hydroxycinnamate (OMpCA) and its mono-hydrated complex (OMpCA-H(2)O) in the S(1) state have been measured by picosecond pump-probe spectroscopy in a supersonic beam. For OMpCA, the lifetime of the S(1)-S(0) origin is 8-9 ps. On the other hand, the lifetime of the OMpCA-H(2)O complex at the origin is 930 ps, which is ∼100 times longer than that of OMpCA. Furthermore, in...
To understand how the protein achieves fluorescence, the isomerization mechanism of the HcRed chromophore is studied both under vacuum and in the solvated red fluorescent protein. Quantum mechanical (QM) and quantum mechanical/molecular mechanical (QM/MM) methods are applied both for the ground and the first excited state. The photoinduced processes in the chromophore mainly involve torsions ar...
The enzymatic conversion of the carcinogenic arylhydroxamic acid, N-hydroxy-2-fluorenylacetamide, to the o-amidophenols, N-(1-hydroxy-2-fluorenyl)acetamide and N-(3-hydroxy-2-fluorenyl)acetamide, referred to as the isomerization of N-hydroxy-2-fluorenylacetamide, by cell fractions of rat liver has been studied. Cell fractions prepared from the livers of normal rats were unable to perform the re...
Oxazinane rings can undergo isomerization or transformation to 5-membered tuned by the anomeric effect.
3-Chloro-Abu and 4-chloro-Nva are biosynthetically incorporated into E. coli peptidyl-Pro cis-trans isomerase B, as substitutes for Val and Leu, respectively. The extent of incorporation is up to ~90%, and substituted protein is catalytically active. By contrast, 4-chloro-Val is not an effective replacement for Ile.
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