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Qun Yan Chung Him Yu Peter Hoi Fu Yu Hua Zou Wen-quan Ruan 《高分子科学》2007,(4):341-345
Biosynthesis and thermal properties of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) with different HV (hydrovalerate) content produced by a Bacillus cereus strain were investigated. A large variety of HV contents (up to about 90 mol%) of PHBV could be produced by this strain. Combined nitrogen sources containing both yeast extract and ammonium sulphate were better for cell growth and polyhydroxyalkanoates (PHA) production than either yeast extract or ammonium sulphate alone. Propionic acid is more favorable for the production of HV content than that of valeric acid. Finally, thermal properties of PHBV produced by this strain are found close to the results of other groups. 相似文献
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生物合理方法设计合成新型除草剂 总被引:1,自引:1,他引:0
采用生物合理的方法设计合成了光合作用抑制剂及ALS酶抑制剂,根据绿色红假单胞菌(Rps.viridis)光合反应中心X-衍射的晶体结构同源模建了高等植物豌豆(Pisumsativum)D1蛋白的结构模型,及其与抑制剂氰基丙烯酸(酰胺)与氢化脲嘧啶的复合物模型。研究了D1蛋白与抑制剂可能的作用位点。为了提高筛选的力度,还应用Wang树脂引入了组合合成的方法。对三类ALS抑制剂进行了2D-QSAR,3-DQSAR,作用模型及新抑制剂的设计研究。 相似文献
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