Difference FT-IR studies of nucleotide binding to the recombination protein RecA

Article Abstract:

The Fourier transform infrared difference spectroscopy in conjunction with the photolytic release of caged nucleotides is used to identify and compare the specific structural changes induced by the binding of the two nucleotides, namely adenosine triphosphate (ATP) and adenosine diphosphate (ADP). It is found that the binding of ATP to RecA induces a conformation with a high affinity for DNA, whereas, ADP reveals a lower affinity for DNA with it.

Adenosine triphosphate, ATP, Optical properties

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FTIR study of the mode of binding of the reactants on the Pd nanoparticles surface during the catalysis of the Suzuki reaction

Article Abstract:

FTIR is used to examine the change in the vibrational frequencies of phenylboronic acid in the films with and without the addition of palladium nanoparticles. The FTIR studies provide proof the mode of binding that occurs in the nanoparticle surface for the first time and also confirms the mechanism of the Suzuki reaction.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Palladium, Catalysis, Chemical properties

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The mechanism of cyclic nucleotide hydrolysis in the phosphodiesterase catalytic site

Article Abstract:

The mechanism of the hydrolysis reaction is examined using a quantum mechanical computational model within the phosphodiesterase superfamily of enzymes (PDE) catalytic site. The results provide new insight that the PDE4 hydrolysis of adenosine 3',5'-cyclic monophosphate (cAMP) is a five step process.

Models, Quantum theory, Quantum mechanics, Phosphodiesterases

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