头孢唑啉钠与木瓜酶相互作用初探

来源 :山西大学学报(自然科学版) | 被引量 : 0次 | 上传用户:pww030
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利用光谱、分子模拟研究头孢唑啉钠和木瓜酶之间的作用。给体-受体间距离为r=1.53nm。当温度为298K时,结合常数为1.79×104 L·mol-1;△S0=45.56J·mol-1·K-1。同时发现,荧光猝灭的主要原因是静态猝灭。分子模拟结果:作用力主要为氢键,范德华力及疏水作用。另外,头孢唑啉钠的氨基氢与甘氨酸氧之间氢键键长为1.91。 The effects of cefazolin sodium and papain were studied by spectroscopy and molecular simulation. Donor-acceptor distance was r = 1.53 nm. When the temperature is 298K, the binding constant is 1.79 × 104 L · mol-1; △ S0 = 45.56J · mol-1 · K-1. Also found that the main reason for fluorescence quenching is static quenching. Molecular simulation results: The main forces of hydrogen bonding, van der Waals forces and hydrophobic effect. In addition, the hydrogen bond between cefazolin sodium and glycine oxygen is 1.91 钠.
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