The news correspondents obtained a quote from the research, "After deducting the inner filter effect, the fluorescence spectra revealed that the tryptophan (Trp) residues were exposed and the fluorescence intensities of CAT increased with the increase in the MWCNTs concentration. At the same time, the environment of the Trp residues became more hydrophobic. The results of UV-vis absorption spectroscopy and CD spectra indicated that the secondary structure of CAT had been changed, and the amino acid residues were located in a more hydrophobic environment. Meanwhile, the UV-vis spectra indicated that the conformation of the heme porphyrin rings was changed. The microenvironment of CAT activity sites may be interfered by MWCNTs."
According to the news reporters, the research concluded: "This research showed that MWCNTs could not only contribute to the conformational changes of protein but also change the enzyme function."
For more information on this research see: Spectroscopic Investigations on the Interaction between Carbon Nanotubes and Catalase on Molecular Level.
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SEPTEMBER 2, 2014
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