根癌土壤杆菌的Ti质粒含有一个与attM同源的基因aiiB，该基因也编码N-酰基高丝氨酸内酯酶活性。
The Ti plasmid of Agrobacterium tumefaciens harbors an attM-paralogous gene, aiiB, also encoding N-Acyl homoserine lactonase activity.
作者信息
Carlier A, Uroz S, Smadja B, Fray R, Latour X, Dessaux Y, Faure D
机构信息
Institut des Sciences du Végétal, Centre National de la Recherche Scientifique, Gif-sur-Yvette, France.
出版信息
Appl Environ Microbiol. 2003 Aug;69(8):4989-93. doi: 10.1128/AEM.69.8.4989-4993.2003.
Abstract
The Agrobacterium tumefaciens C58 genome contains three putative N-acyl homoserine lactone (acyl-HSL) hydrolases, which are closely related to the lactonase AiiA of Bacillus. When expressed in Escherichia coli, two of the putative acyl-HSL hydrolases, AttM and AiiB, conferred the ability to degrade acyl-HSLs on the host. In Erwinia strain 6276, the lactonases reduced the endogenous acyl-HSL level and the bacterial virulence in planta.
摘要
根癌农杆菌C58基因组包含三种假定的N-酰基高丝氨酸内酯（酰基-HSL）水解酶，它们与芽孢杆菌的内酯酶AiiA密切相关。当在大肠杆菌中表达时，两种假定的酰基-HSL水解酶AttM和AiiB赋予宿主降解酰基-HSL的能力。在欧文氏菌菌株6276中，内酯酶降低了植物体内的内源性酰基-HSL水平和细菌毒力。
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