In this paper, Fourier transform infrared spectroscopy and inductively coupled plasma atomic emission spectrometry were used to study the filtrates produced by reactions of different initial mole ratios of bovine seru...In this paper, Fourier transform infrared spectroscopy and inductively coupled plasma atomic emission spectrometry were used to study the filtrates produced by reactions of different initial mole ratios of bovine serum albumin (BSA) and calcium carbonate (CaCO3) in saline solution. The results demonstrated that there were strong interactions between BSA and calcium carbonate by hydrogen bonds or coordination or electrostatic attraction, which made the solubility of calcium carbonate in aqueous solution increased and the microstructure of BSA and CaCO3 changed. The interaction helped to form biomineral containing protein and CaCO3 in organism.展开更多
Biliary protein was isolated and purified by ammonium sulfate fraction ation and Sephadex G-75 gel filtration column chromatography. FTIR showed that w as a glycoprotein. Its molecular weight was determined as 34.7 kD...Biliary protein was isolated and purified by ammonium sulfate fraction ation and Sephadex G-75 gel filtration column chromatography. FTIR showed that w as a glycoprotein. Its molecular weight was determined as 34.7 kD by MS. The int eraction between Mg2+ and biliary protein was studied by fluorescence spectrosco py and UV-Visible spectroscopy. The result showed the quenching mechanism of the combination of Mg2+ with biliary protein was a static quenching procedure. The protein underwent conformation changing and unfolding, more hydrophobic residues would be exposed to solvents after the Mg2+ was added.展开更多
文摘In this paper, Fourier transform infrared spectroscopy and inductively coupled plasma atomic emission spectrometry were used to study the filtrates produced by reactions of different initial mole ratios of bovine serum albumin (BSA) and calcium carbonate (CaCO3) in saline solution. The results demonstrated that there were strong interactions between BSA and calcium carbonate by hydrogen bonds or coordination or electrostatic attraction, which made the solubility of calcium carbonate in aqueous solution increased and the microstructure of BSA and CaCO3 changed. The interaction helped to form biomineral containing protein and CaCO3 in organism.
文摘Biliary protein was isolated and purified by ammonium sulfate fraction ation and Sephadex G-75 gel filtration column chromatography. FTIR showed that w as a glycoprotein. Its molecular weight was determined as 34.7 kD by MS. The int eraction between Mg2+ and biliary protein was studied by fluorescence spectrosco py and UV-Visible spectroscopy. The result showed the quenching mechanism of the combination of Mg2+ with biliary protein was a static quenching procedure. The protein underwent conformation changing and unfolding, more hydrophobic residues would be exposed to solvents after the Mg2+ was added.