Dab tsi yog qhov ua haujlwm ntawm enzyme topoisomerase hauv DNA replication quizlet?
Dab tsi yog qhov ua haujlwm ntawm enzyme topoisomerase hauv DNA replication quizlet?

Video: Dab tsi yog qhov ua haujlwm ntawm enzyme topoisomerase hauv DNA replication quizlet?

Video: Dab tsi yog qhov ua haujlwm ntawm enzyme topoisomerase hauv DNA replication quizlet?
Video: Leng Yang - Yog Vim Dab Tsi (Official Full Song | Nkauj Tawm Tshiab) 2020/05/24 2024, Kaum ib hlis
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cais cov strands los ntawm kev paub txog keeb kwm, rhuav tshem hydrogen bonds, thiab ua a rov ua dua npuas. Dab tsi yog qhov Lub hom phiaj ntawm topoisomerase ? unwinds lub resulting supercoils.

Xav txog qhov no, dab tsi yog qhov ua haujlwm ntawm enzyme topoisomerase hauv DNA replication?

Topoisomerases yog cov enzymes uas koom nyob rau hauv lub overwinding los yog underwinding ntawm DNA . Qhov teeb meem winding ntawm DNA tshwm sim vim qhov intertwined xwm ntawm nws ob-helical qauv. Thaum DNA replication thiab transcription, DNA ua overwound ua ntej ntawm ib rov ua dua diav rawg.

Tsis tas li ntawd, kev ua haujlwm ntawm enzyme DNA polymerase quizlet yog dab tsi? Ob txoj hlua sib cais thiab tom qab ntawd txhua txoj hlua txuas ntxiv DNA ib ntus yog recreated los ntawm ib enzyme hu ua DNA polymerase . Qhov no enzyme ua kom cov hlua txuas ntxiv los ntawm kev nrhiav qhov tseeb los ntawm kev sib koom ua ke ntawm lub hauv paus, thiab khi nws mus rau qhov qub strand.

Raws li txoj cai, qhov ua haujlwm ntawm topoisomerase quizlet yog dab tsi?

Topoisomerase lov covalent bonds nyob rau hauv lub nraub qaum ntawm ob niam txiv strands. Topoisomerase rhuav tshem covalent daim ntawv cog lus nyob rau hauv lub caj qaum ntawm ib tug niam txiv strand. ( Topoisomerase relieves mob tshwm sim los ntawm unwinding DNA los ntawm helicase. Ua ntej, nws khi rau niam txiv DNA ua ntej ntawm kev rov ua dua tshiab.

Lub luag haujlwm ntawm DNA gyrase quizlet yog dab tsi?

DNA gyrase (tseem hu ua topoisomerase) txo cov supercoiling (so tensions) uas tsim thaum lub sij hawm DNA unwinding, tiv thaiv DNA kev tawg.

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