Dab tsi yog qhov transcription pib complex?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

kev sau ntawv / DNA kev sau ntawv . Ua ke, lub kev sau ntawv yam thiab RNA polymerase tsim a complex hu ua transcription pib complex . Qhov no complex pib kev sau ntawv , thiab RNA polymerase pib mRNA synthesis los ntawm kev sib piv cov hauv paus ntsiab lus rau thawj DNA strand.

Tom qab ntawd, dab tsi ua rau lub transcription pib complex?

A kev sau ntawv - pib complex suav nrog RNA polymerase thiab ntau yam dav dav kev sau ntawv yam uas khi rau cheeb tsam txhawb nqa. Feem ntau kev sau ntawv yam uas xav tau rau Pol II pib kev sau ntawv los ntawm feem ntau TATA-lub thawv txhawb nqa hauv vitro tau raug cais tawm thiab tus yam ntxwv.

Tsis tas li ntawd, peb lub ntsiab ntawm qhov pib ua haujlwm yog dab tsi? pib complex txhais. Cov complex tsim rau pib ntawm kev txhais lus. Nws muaj 30S ribosomal subunit; mRNA; N-formyl-methionine tRNA; thiab peb pib yam.

Yog li ntawd, lub luag haujlwm ntawm Tfiih nyob rau hauv lub transcription pib complex yog dab tsi?

(NER) TSI yog ib tug general kev sau ntawv qhov tseem ceeb uas ua haujlwm los nrhiav RNA Pol II rau cov neeg txhawb nqa ntawm cov noob. Nws muaj nuj nqi raws li ib tug helicase uas unwinds DNA. Nws kuj tseem tshem tawm DNA tom qab qhov mob DNA tau lees paub los ntawm kev kho genome thoob ntiaj teb (GGR) txoj hauv kev lossis kev sau ntawv -coupled repair (TCR) pathway of NER.

Dab tsi yog qhov chaw pib transcriptional hauv cov noob?

Cov transcription pib site yog qhov chaw nyob qhov twg pib transcription ntawm 5'-kawg ntawm a noob ib ntus. Txhua tus neeg noob yog tsim los ntawm deoxyribonucleic acid (DNA) nyob rau hauv ob lub helix. Nrog rau txhua lub helix uas yog tsim los ntawm phosphate-deoxyribose polymer yog nitrogenous bases.