Video: Puas yog tag nrho cov kab mob muaj kev txwv enzymes?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Kev txwv cov enzymes yog pom hauv kab mob (thiab lwm yam prokaryotes). Lawv lees paub thiab khi rau cov ntu tshwj xeeb ntawm DNA, hu ua txwv qhov chaw.
Tsuas yog li ntawd, cov kab mob tuaj yeem tsim cov enzymes txwv tsis pub nws cov DNA?
Qhov txaus siab, txwv tsis pub enzymes tsis sib cais lawv tus kheej DNA . Kab mob tiv thaiv lawv tus kheej DNA los ntawm chop down txwv enzyme los ntawm methylation txwv qhov chaw. Methylation ntawm DNA yog ib txoj kev paub zoo los hloov kho DNA muaj nuj nqi thiab kab mob DNA yog methylated heev.
Ib sab saum toj no, qhov kev txwv txwv pom muaj nyob qhov twg? Txhawm rau txiav DNA, tag nrho txwv enzymes ua ob qhov kev txiav, ib zaug los ntawm txhua lub qab zib-phosphate qaum (piv txwv li txhua txoj hlua) ntawm DNA ob lub helix. Cov no cov enzymes yog pom nyob rau hauv cov kab mob thiab archaea thiab muab ib tug tiv thaiv mechanism tiv thaiv invading kab mob.
Kuj Paub, vim li cas cov kab mob muaj cov txwv enzyme?
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. Hauv nyob kab mob , txwv enzymes ua haujlwm los tiv thaiv lub cell tiv thaiv kev kis tus kab mob bacteriophages.
Yuav txwv cov npe enzymes li cas?
Kev txwv enzymes muaj npe raws li cov kab mob uas lawv tau tshawb pom. Piv txwv li, lub enzyme Hind III raug cais tawm ntawm Haemophilus influenzae, lim Rd. Thawj peb tsab ntawv ntawm lub npe yog italicized vim lawv abbreviate lub genus thiab hom npe ntawm lub cev.
Pom zoo:
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