Kev txwv enzymes puas tuaj yeem txiav RNA?
Kev txwv enzymes puas tuaj yeem txiav RNA?

Video: Kev txwv enzymes puas tuaj yeem txiav RNA?

Video: Kev txwv enzymes puas tuaj yeem txiav RNA?
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Kev txwv cov enzymes yog nucleases - cov enzymes tias txiav nucleic acid polymers (piv txwv li DNA thiab RNA ). Lub peev xwm ntawm cov no cov enzymes rau txiav DNA ntawm cov chaw tshwj xeeb muab cov kab mob nrog ib hom kev tiv thaiv kab mob uas txiav nce thiab, yog li ntawd, deactivates txawv teb chaws DNA xws li qhia los ntawm cov kab mob.

Raws li txoj cai, txwv tsis pub enzymes txiav qhov twg?

Kev txwv Enzyme Hom Feem ntau, Hom I enzymes txiav DNA ntawm qhov chaw nyob deb ntawm qhov kev lees paub; Hom II txiav DNA nyob rau hauv lossis ze rau qhov kev lees paub; Hom III txiav DNA nyob ze ntawm kev lees paub ua ntu zus; thiab Hom IV cleave methylated DNA.

Tsis tas li ntawd, kev txwv enzyme ua li cas? A txwv enzyme yog cov protein uas paub txog qhov tshwj xeeb, luv luv nucleotide ib ntus thiab txiav DNA tsuas yog ntawm qhov chaw tshwj xeeb, uas yog hu ua txwv qhov chaw lossis lub hom phiaj ua ntu zus. Ntau tshaj 400 txwv enzymes tau raug cais tawm ntawm cov kab mob uas tsim lawv.

Ntxiv mus, puas tuaj yeem txwv cov enzymes txiav ib leeg stranded DNA?

Kev txwv cov enzymes yog DNA - txiav enzymes . Txhua enzyme paub txog ib lossis ob peb lub hom phiaj sib lawv liag thiab txiav DNA ntawm los yog ze ntawm cov kab ke. Ntau txwv enzymes ua staggered txiav , ua xaus nrog tib - tso tseg DNA overhangs. Txawm li cas los xij, qee qhov ua rau blunt kawg.

Dab tsi yog qhov sib txawv ntawm kev txwv enzymes?

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.

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