Lub npe ntawm cov enzyme uas catalyzes ntawm cov synthesis ntawm mRNA Strand yog dab tsi?
Lub npe ntawm cov enzyme uas catalyzes ntawm cov synthesis ntawm mRNA Strand yog dab tsi?

Video: Lub npe ntawm cov enzyme uas catalyzes ntawm cov synthesis ntawm mRNA Strand yog dab tsi?

Video: Lub npe ntawm cov enzyme uas catalyzes ntawm cov synthesis ntawm mRNA Strand yog dab tsi?
Video: Norepinephrine in Health & Disease - Dr. David Goldstein 2024, Kaum ib hlis
Anonim

mRNA yog "tus tub txib" RNA. mRNA yog synthesized nyob rau hauv lub nucleus siv cov nucleotide sib lawv liag DNA raws li tus qauv. Cov txheej txheem no yuav tsum muaj nucleotide triphosphates ua substrates thiab yog catalyzed los ntawm enzyme RNA polymerase II . Cov txheej txheem ntawm kev ua mRNA los ntawm DNA hu ua transcription, thiab nws tshwm sim nyob rau hauv lub nucleus.

Kuj paub, lub npe ntawm cov enzyme uas catalyzes polymerization ntawm mRNA yog dab tsi?

RNA polymerase

yog mRNA synthesized 5 mus rau 3? Genetic code Thaum lub sijhawm sau ntawv, RNA polymerase nyeem cov qauv DNA strand hauv 3 '→ 5 ' direction, tab sis mRNA yog tsim nyob rau hauv lub 5 'ua 3 'kev taw qhia. Cov mRNA yog ib leeg-stranded thiab yog li ntawd tsuas muaj peb ua tau nyeem thav ntawv, uas tsuas yog ib qho yog txhais.

Yog li ntawd, dab tsi enzyme catalyzes lub synthesis ntawm mRNA?

RNA polymerase II

Dab tsi enzyme pib 5 capping ntawm mRNA?

Peb enzymes, RNA triphosphatase , Guanylyltransferase (los yog CE), thiab methyltransferase koom nrog hauv kev sib ntxiv ntawm methylated 5 'cap rau mRNA.

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