2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
On the lagging strand , luv luv ntu ntawm DNA, hu ua Okazaki fragments, yog synthesized ntawm RNA primers RNA primers RNA primers nyob rau hauv vivo
Ib chav kawm ntawm enzymes hu ua primases ntxiv ib qho ntxiv RNA primer rau kev nyeem ntawv template de novo ntawm ob qho tib si ua thiab lagging strands. Pib los ntawm qhov pub dawb 3'- OH ntawm cov primer, hu ua primer terminus, DNA polymerase tuaj yeem txuas ntxiv cov hlua khi tshiab. https://en.wikipedia.org › wiki › Primer_(molecular_biology)
Primer (molecular biology) - Wikipedia
Okazaki fragments tsim nyob qhov twg?
Okazaki fragments yog cov DNA luv luv ntawm lub lagging strand tsim thaum lub sij hawm DNA replication. Txij li thaum lub lag luam strands khiav hauv 3' mus rau 5' kev taw qhia, DNA synthesis ntawm lub lagging strand tsis txuas ntxiv. Nws tsim Okazaki fragments ntawm lub lagging strand uas yog ligated tom qab los ntawm DNA ligase.
Puas yog Okazaki tawg ntawm cov hlua khi?
Lagging-strand replication yog discontinuous, nrog luv Okazaki fragments raug tsim thiab tom qab txuas ua ke.
Vim li cas Okazaki fragments tsim ntawm lagging strand?
Okazaki fragments yog tsim nyob rau hauv lagging strand rau the synthesis ntawm DNA nyob rau hauv ib tug 5′ mus rau 3′ kev taw qhia rau lub replication diav rawg. … Cov fragments muaj nyob raws li replication ntawm DNA tshwm sim nyob rau hauv lub 5′ -> 3′ kev taw qhia vim lubkev txiav txim ntawm DNA polymerase ntawm 3'- OH ntawm cov hlua tam sim no ntxiv cov nucleotides dawb.
Yuav ua li cas strand yuav tsum tau ua nyob rau hauv tej daim los yog Okazaki fragments?
Vim DNA polymerase tsuas tuaj yeem tsim cov DNA hauv 5′ txog 3′ kev taw qhia, lwm txoj hlua tshiab tau muab tso ua ke hauv luv luv hu ua Okazaki fragments. Lub Okazaki fragments txhua tus xav tau ib qho primer ua los ntawm RNA los pib cov synthesis. Cov strand nrog Okazaki fragments yog hu ua the lagging strand.
