Video: Tus neeg txhawb nqa yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Feem ntau, txhawb nqa yog tsim ntawm lub hauv paus ntsiab lus uas lub dav dav transcriptional machinery khi (piv txwv li, RNA polymerase II thiab general TFs), thiab cov noob proximal txhawb nqa uas ua haujlwm raws li qhov chaw tsaws rau kev tswj hwm TFs.
Tsis tas li ntawd, dab tsi yog tus txhawb nqa hauv biology?
txhawb nqa . Txhawb nqa sequences yog DNA sequences uas txhais qhov twg transcription ntawm ib tug noob los ntawm RNA polymerase pib. Txhawb nqa Cov kab ke feem ntau yog nyob ncaj qha mus rau sab saud lossis ntawm 5' kawg ntawm qhov chaw pib pib.
Qhov thib ob, tus qauv txhawb nqa yog dab tsi? A txhawb nqa yog thaj tsam tswj hwm ntawm DNA nyob rau sab sauv (mus rau thaj tsam 5') ntawm cov noob, muab lub ntsiab lus tswj hwm rau kev tswj cov noob hloov pauv. Cov txhawb nqa muaj cov DNA tshwj xeeb uas tau lees paub los ntawm cov proteins hu ua transcription yam.
Kuj paub, dab tsi yog lub luag haujlwm tseem ceeb ntawm tus txhawb nqa?
Txhais. A txhawb nqa yog ib cheeb tsam ntawm DNA qhov twg transcription ntawm ib tug noob pib. Cov neeg txhawb nqa yog ib qho tseem ceeb ntawm kev qhia vectors vim lawv tswj kev khi ntawm RNA polymerase rau DNA. RNA polymerase transcribes DNA mus rau mRNA uas yog thaum kawg txhais mus rau ib tug functional proteins.
Tus neeg txhawb nqa khi rau dab tsi?
A txhawb yog ib ntu ntawm DNA yuav tsum tau tig lub noob rau lossis tawm. Cov txheej txheem ntawm transcription yog pib ntawm lub txhawb nqa . Feem ntau pom nyob ze ntawm qhov pib ntawm cov noob, lub txhawb muaj a kev khi qhov chaw rau cov enzyme siv los ua tus xa xov RNA (mRNA) molecule.
Pom zoo:
PTAC txhawb nqa yog dab tsi?
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