食品科学 ›› 2007, Vol. 28 ›› Issue (4): 187-191.

• 生物工程 • 上一篇    下一篇

荧光假单胞菌噬菌体KS461-2的分离及其生物学特性研究

 王子微, 孙文敬, 王辉, 刘翔, 王丽, 刘敬泽   

  1. 河北师范大学生命科学学院; 华北制药集团有限责任公司; 河北师范大学生命科学学院 河北 石家庄 050016; 河北 石家庄 050016; 河北 石家庄 050011;
  • 出版日期:2007-04-15 发布日期:2011-12-31

Isolation and Biological Characterization of Pseudomonas fluorescens Bacteriophages KS461-2

 WANG  Zi-Wei, SUN  Wen-Jing, WANG  Hui, LIU  Xiang, WANG  Li, LIU  Jing-Ze   

  • Online:2007-04-15 Published:2011-12-31

摘要: 从2-酮基-D-葡萄糖酸产生菌荧光假单胞菌A46异常发酵液中分离得到1种噬菌体,将其命名为KS461-2。电镜观察表明,噬菌体KS461-2呈蝌蚪状。根据ICTV对病毒的分类标准,噬菌体KS461-2属长尾噬菌体科,为烈性噬菌体。噬菌体KS461-2对宿主菌的最佳感染复数为0.01,温度和pH对其稳定性具有显著的影响。一步生长曲线显示,噬菌体KS461-2的潜伏期约30min,裂解期约135min,裂解量为24。SDS-PAGE显示,噬菌体KS461-2有5种主要的结构蛋白,其分子量分别为66.0、61.0、42.5、34.7和14.4kDa。

关键词: 2-酮基-D-葡萄糖酸, 荧光假单胞菌, 噬菌体KS461-2, 分离, 生物学特性

Abstract: A phage,named KS461-2,was separated from the abnormal fermentation liquid of Pseudomonas fluorescens A46 strain which produced 2-keto-D-gluconic acid.The KS461-2 was tadpole-like bacteriophage as observed by electron microscope. According to ICTV(International Committee for Taxonomy of Viruses),it belongs to the Siphoviridae family and is a virulent phage. The optimal MOI(multiplicity of infection)of KS461-2 is 0.01.Temperature and pH value had remarkable effects on the stability of phage KS461-2.One-step growth curve showed that the latent period is 30min,the burst period 135 min,and the average burst size 24 phage particles fmfected cell.SDS-PAGE profiles indicated that KS461-2 contains five structural proteins, and their molecular masses are 66.0,61.0,42.5,34.7 and 14.4kDa respectively.

Key words: 2-keto-D-gluconic acid, Pseudomonas fluorescens, phage KS461-2, isolation, biological characterization