The Structure Analysis and Antigenicity Study of the N Protein of SARS-CoV-中国期刊网

摘要 TheCoronaviridaefamilyischaracterizedbyanucleocapsidthatiscomposedofthegenomeRNAmoleculeincombinationwiththenucleoprotein(Nprotein)withinavirion.ThemoststrikingphysiochemicalfeatureoftheNproteinofSARS-CoVisthatitisatypicalbasicproteinwithahighpredictedpIandhighhydrophilicity,whichisconsistentwithitsfunctionofbindingtotheribophosphatebackboneoftheRNAmolecule.ThepredictedhighextentofphosphorylationoftheNproteinonmultiplecandidatephosphorylationsitesdemonstratesthatitwouldberelatedtoimportantfunctions,suchasRNA-bindingandlocalizationtothenucleolusofhostcells.SubsequentstudyshowsthatthereisanSR-richregionintheNproteinandthisregionmightbeinvolvedintheprotein-proteininteraction.TheabundantantigenicsitespredictedintheNprotein,aswellasexperimentalevidencewithsynthesizedpolypeptides,indicatethattheNproteinisoneofthemajorantigensoftheSARS-CoV.Comparedwithotherviralstructuralproteins,thelowvariationrateoftheNproteinwithregardstoitssizesuggestsitsimportancetothesurvivalofthevirus.

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The Structure Analysis and Antigenicity Study of the N Protein of SARS-CoV

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The Structure Analysis and Antigenicity Study of the N Protein of SARS-CoV

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