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Distinct genetic code expansion strategies for selenocysteine and pyrrolysine are reflected in different aminoacyl‐tRNA formation systems

机译:硒代半胱氨酸和吡咯赖氨酸的不同遗传密码扩展策略反映在不同的氨酰基tRNA形成系统中

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Selenocysteineandpyrrolysine,knownasthe21stand22ndaminoacids,aredirectlyinsertedintogrowingpolypeptidesduringtranslation.SelenocysteineissynthesizedviaatRNA‐dependentpathwayanddecodesUGA(opal)codons.TheincorporationofselenocysteinerequirestheconcertedactionofspecificRNAandproteinelements.Incontrast,pyrrolysineisligateddirectlytotRNAPylandinsertedintoproteinsinresponsetoUAG(amber)codonswithouttheneedforcomplexre‐codingmachinery.HerewereviewthelatestupdatesonthestructureandmechanismsofmoleculesinvolvedinSec‐tRNASecandPyl‐tRNAPylformationaswellasthedistributionofthePyl‐decodingtrait...
机译:Selenocysteineandpyrrolysine,knownasthe21stand22ndaminoacids,aredirectlyinsertedintogrowingpolypeptidesduringtranslation.SelenocysteineissynthesizedviaatRNA-dependentpathwayanddecodesUGA(蛋白石)codons.TheincorporationofselenocysteinerequirestheconcertedactionofspecificRNAandproteinelements.Incontrast,pyrrolysineisligateddirectlytotRNAPylandinsertedintoproteinsinresponsetoUAG(琥珀色)codonswithouttheneedforcomplexre-codingmachinery.HerewereviewthelatestupdatesonthestructureandmechanismsofmoleculesinvolvedinSec-tRNASecandPyl-tRNAPylformationaswellasthedistributionofthePyl-decodingtrait ...

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    《FEBS Letters》 |2010年第2期|共8页
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