Video: Lub luag haujlwm ntawm cov protein txuas txuas yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Dab tsi yog qhov ua haujlwm ntawm connector proteins ? Lawv txuas cov strand DNA polymerase thiab cov lagging strand DNA polymerase ua ke.
Kuj tseem yuav paub yog, dab tsi yog qhov kev ua haujlwm ntawm cov protein sib txuas thaum lub sijhawm DNA rov ua dua?
Lawv pab ib tug niam txiv DNA strand thiab ib tug tshiab synthesized DNA strand yuav tuav ua ke. Lawv tso cai DNA synthesis tshwm sim hauv lub 3' to 5' direction. Lawv txuas tus thawj strand DNA polymerase thiab lub lagging strand DNA polymerase ua ke.
Tsis tas li ntawd, qhov twg DNA tshiab strand yog synthesized tsis tu ncua los ntawm 5 → 3 cov lus qhia? Ib txoj hlua tshiab , uas khiav 5 'ua 3 ' mus rau replication diav rawg, yog qhov yooj yim. Qhov no txoj hlua ua tsis tu ncua ,vim DNA polymerase yog txav mus rau tib yam kev taw qhia raws li lub replication diav rawg. Qhov no tsis tu ncua synthesized strand hu ua tus thawj coj txoj hlua.
Cov lus nug tseem yog, qhov twg DNA strand yog synthesized tsis tu ncua?
Ntawm tus thawj txoj hlua , DNA yog synthesized tsis tu ncua , whereas ntawm lagging txoj hlua , DNA yog ua ke hauv luv luv hu ua Okazaki fragments.
Dab tsi tswj cov txheej txheem ntawm DNA replication?
DNA Replication thiab Checkpoint Tswj hauv S Phase. Thaum DNA replication , lub unwinding ntawm strands tawm ib strand yooj yim. Hauv lub voj voog eukaryotic cell, chromosome duplication tshwm sim thaum "S theem" (theem ntawm DNA synthesis) thiab chromosome segregation tshwm sim thaum "M theem" (theem mitosis).
Pom zoo:
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