此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。2020最新科学英文演讲稿范文Secretidentitiesaren’tjustforsuperheroesanymore.Researchershavefoundthataproteinpresentineverythingfromamoebastopeopleislivingadoublelife.OnceitbindstoDNA,theprotein,calledRfaH,ripsapart—andthenrefoldsintoadifferentshape,todoadifferentjob.RfaHisatranscriptionprotein—attachedtoorfreedfromastretchofDNA,itdeterminesifageneisexpressedornot.Butoncetheproteinhascarriedoutitstask,itshelicalstructureunravels.Withinseconds,itrefoldsintoabarrelstructure,whichhasanewrole,thistimeintranslation,whereithelpsthecellproduceaminoacidsfornewproteins.ThestudyisinthejournalCell.[BjrnM.Burmannetal,AnαHelixtoβBarrelDomainSwitchTransformstheTranscriptionFactorRfaHintoaTranslationFactor]Thenextstepistofindoutifthebarrelcanrefoldintothehelix.Afterthat,researcherswanttoseeifproteinssimilartoRfaH—whicharepresentinalllifeonEarth—arecapableofcomparablemolecularcontortion.Whichwouldmeanalotmorebangforourproteinbuck.—IanChant
