Puas yog prokaryotic mRNA muaj lub hau thiab tus Tsov tus tw?
Puas yog prokaryotic mRNA muaj lub hau thiab tus Tsov tus tw?

Video: Puas yog prokaryotic mRNA muaj lub hau thiab tus Tsov tus tw?

Video: Puas yog prokaryotic mRNA muaj lub hau thiab tus Tsov tus tw?
Video: Стресс, портрет убийцы - полный документальный фильм (2008) 2024, Kaum ib hlis
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“Lub 5' cap tiv thaiv nascent mRNA los ntawm degradation thiab pab nyob rau hauv ribosome khi thaum txhais lus. Poly hnab (A) qab yog ntxiv rau 3' kawg ntawm lub pre- mRNA ib zaug elongation tiav. Tab sis li cas txog lub Prokaryotic mRNA ?

Yog li ntawd, puas prokaryotic mRNA muaj poly A tail?

Cov poly (A) tail yog ib qho tseem ceeb rau nuclear export, txhais lus, thiab stability ntawm mRNA . mRNA molecules nyob rau hauv ob qho tib si prokaryotes thiab eukaryotes muaj polyadenylated 3'-kawg, nrog rau prokaryotic poly(A) tails feem ntau luv thiab tsawg dua mRNA polyadenylate molecules.

Ib yam li ntawd, lub hau thiab tus Tsov tus tw ntawm mRNA yog dab tsi? Ob qhov kawg ntawm pre- mRNA raug hloov kho los ntawm kev sib ntxiv ntawm pawg tshuaj. Cov pab pawg thaum pib (5' kawg) hu ua a cap , thaum pab pawg kawg (3' kawg) hu ua a qab.

Yog li ntawd, puas prokaryotic mRNA muaj lub hau?

Ib zaug nyob rau hauv qhov chaw, lub cap plays lub luag haujlwm hauv ribosomal lees paub ntawm tus tub txib RNA thaum lub sij hawm kev txhais lus rau hauv cov protein. Prokaryotes ua tsis yog muaj zoo ib yam cap vim lawv siv lwm cov cim rau kev lees paub los ntawm ribosome.

Kev ua haujlwm ntawm lub hau thiab tus Tsov tus tw ntawm eukaryotic mRNA yog dab tsi?

- Lawv koom nrog hauv kev ua kom nrawm ntawm kev txhais lus los ntawm ribosome. - Lawv koom nrog hauv kev tshem tawm exons los ntawm mRNA. - Lawv koom nrog tiv thaiv kev txhais lus ntawm mRNA kom txog thaum nws tawm mus nucleus.

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