Cov chaw txwv enzyme yog dab tsi?
Cov chaw txwv enzyme yog dab tsi?

Video: Cov chaw txwv enzyme yog dab tsi?

Video: Cov chaw txwv enzyme yog dab tsi?
Video: 4 Yam Tib neeg Ntshaw tshaj plaws yog dab tsi? 2024, Kaum ib hlis
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A txwv enzyme , txwv endonuclease, los yog restrictase yog ib qho enzyme uas cleaves DNA mus rau hauv fragments ntawm los yog ze rau cov kev paub qhov chaw nyob rau hauv molecules hu ua txwv qhov chaw . Cov enzymes no niaj hnub siv rau kev hloov kho DNA hauv cov chaw sim, thiab lawv yog cov cuab yeej tseem ceeb hauv molecular cloning.

Yog li ntawd, dab tsi yog qhov txwv enzyme paub qhov chaw?

Los ntawm Wikipedia, phau ntawv txhais lus pub dawb. Qhov chaw txwv , los yog txwv qhov chaw paub , yog nyob rau ntawm DNA molecule uas muaj qhov tshwj xeeb (4-8 lub hauv paus khub hauv qhov ntev) ntawm nucleotides, uas tau lees paub los ntawm txwv cov enzymes.

Tsis tas li ntawd, hom kev txwv enzymes yog dab tsi? Kev lig kev cai, plaub hom kev txwv cov enzymes raug lees paub, raug xaiv I, II, III, thiab IV, uas txawv feem ntau hauv cov qauv, qhov chaw tawg, qhov tshwj xeeb, thiab cov cofactors.

Kuj tseem paub yog, dab tsi yog qhov txwv enzyme siv rau?

Hauv chav kuaj, txwv enzymes (los yog txwv endonucleases) yog siv rau txiav DNA rau hauv me me. Cov kev txiav yog ib txwm ua ntawm cov nucleotide ib ntus. txawv txwv enzymes lees paub thiab txiav cov DNA sib txawv.

Hom 2 txwv enzyme yog dab tsi?

Hom II txwv enzymes yog cov paub siv rau niaj hnub molecular biology daim ntaub ntawv xws li noob cloning thiab DNA fragmentation thiab tsom xam. Cov no cov enzymes cleave DNA ntawm qhov chaw ruaj khov nrog kev hwm rau lawv qhov kev lees paub ua ntu zus, tsim cov khoom siv rov ua dua tshiab thiab cov qauv gel electrophoresis sib txawv.

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