RNA kev loj hlob ib txwm nyob rau hauv 5′ → 3′ kev taw qhia: nyob rau hauv lwm yam lus, nucleotides yeej ib txwm ntxiv ntawm 3′ loj hlob, raws li qhia hauv daim duab 10-6b. Vim hais tias ntawm qhov tsis sib xws ntawm cov nucleotide khub, qhov tseeb tias RNA yog synthesized 5′ → 3′ txhais tau hais tias cov template strand yuav tsum tau oriented 3′ → 5′.
DNA synthesis directionally oriented li cas?
Kev taw qhia muaj qhov tshwm sim hauv DNA synthesis, vim DNA polymerase tuaj yeem tsim cov DNA hauv ib qho kev coj los ntawm kev ntxiv nucleotides rau 3′ kawg ntawm DNA strand… Cov nucleotides ntawm ib leeg strand yog li no tuaj yeem siv los tsim kho nucleotides ntawm tus khub tshiab sib txuas.
Vim li cas DNA synthesis tshwm sim hauv 5' - 3 kev coj?
DNA ib txwm ua los ntawm 5'-rau-3' kev taw qhia, txhais tau tias nucleotides tsuas yog ntxiv rau 3' kawg ntawm txoj kev loj hlob… (B) Thaum lub sijhawm DNA replication, pawg 3'-OH ntawm lub xeem nucleotide ntawm cov strand tshiab tawm tsam 5'-phosphate pawg ntawm cov khoom dNTP. Ob tug phosphates raug tshem tawm.
Vim li cas DNA thiab RNA muaj kev coj ncaj ncees?
Qhov tshwm sim ntawm cov qauv ntawm nucleotides yog tias cov saw hlau polynucleotide muaj kev taw qhia - uas yog, nws muaj ob qhov kawg uas sib txawv ntawm ib leeg… DNA sequences feem ntau yog sau rau hauv qhov 5' mus rau 3' kev taw qhia, txhais tau hais tias nucleotide ntawm 5' kawg los ua ntej thiab nucleotide ntawm 3' kawg los kawg.
DNA thiab RNA yog dab tsi?
DNA thiab RNA yog synthesized nyob rau hauv lub 5′ rau 3′ kev taw qhia.
