Video: Lub luag haujlwm ntawm Tfiih hauv kev sau ntawv yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
(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.
Ib yam li ntawd, nws raug nug, yuav ua li cas hloov pauv cov txheej txheem tswj cov noob qhia?
Transcription yam yog proteins uas tswj tus kev sau ntawv ntawm noob - uas yog, lawv luam tawm rau hauv RNA, ntawm txoj kev ua cov protein. Transcription yam pab kom ntseeg tau tias txoj cai noob yog qhia nyob rau hauv txoj cai hlwb ntawm lub cev, nyob rau lub sij hawm.
Ib yam li ntawd, TATA lub thawv puas tau sau? Kev sau ntawv yog cov txheej txheem uas tsim cov RNA molecule los ntawm DNA ib ntus. Cov TAWS box yog lub npe rau nws qhov kev khaws cia DNA ib ntus, uas feem ntau yog TATAAA. Ntau cov noob eukaryotic muaj kev txuag TAWS box nyob 25-35 puag khub ua ntej lub kev sau ntawv pib qhov chaw ntawm ib tug gene.
Hais txog qhov no, Tfiie yog dab tsi?
Nws yog tetramer ntawm ob alpha thiab ob beta chains thiab cuam tshuam nrog TAF6 / TAFII80, ATF7IP, thiab varicella-zoster virus IE63 protein ntau . TFIIE recruits TFIIH mus rau qhov kev pib ua haujlwm thiab txhawb nqa RNA polymerase II C-terminal domain kinase thiab DNA-dependent ATPase cov haujlwm ntawm TFIIH.
Dab tsi yog lub hom phiaj ntawm kev sau cov ntsiab lus?
Transcription yam yog cov proteins koom nrog hauv cov txheej txheem hloov pauv, lossis hloov pauv, DNA rau hauv RNA. Transcription yam suav nrog ntau cov proteins, tsis suav nrog RNA polymerase, uas pib thiab tswj cov kev sau ntawv ntawm cov noob.
Pom zoo:
Lub luag haujlwm ntawm CDK yog dab tsi hauv lub cev ua haujlwm ntawm tes tshwj xeeb hauv lub voj voog ntawm tes?
Los ntawm phosphorylation, Cdks teeb liab lub xov tooj ntawm tes uas nws tau npaj kom dhau mus rau theem tom ntej ntawm lub voj voog ntawm tes. Raws li lawv lub npe qhia, Cyclin-Dependent Protein Kinases yog nyob ntawm cyclins, lwm chav kawm ntawm kev tswj hwm cov protein. Cyclins khi rau Cdks, ua kom cov Cdks rau phosphorylate lwm cov molecules
Lub luag haujlwm ntawm photosystem 2 nyob rau hauv lub teeb pom kev yog dab tsi?
Ob lub photosystems nqus lub teeb lub zog los ntawm cov proteins uas muaj cov xim, xws li chlorophyll. Lub teeb-dependent tshwm sim pib hauv photosystem II. Qhov chaw tshuaj tiv thaiv no, hu ua P700, yog oxidized thiab xa cov hluav taws xob hluav taws xob siab kom txo tau NADP + rau NADPH
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Dab tsi organelle yog lub luag haujlwm rau kev thauj khoom hauv thiab tawm ntawm lub cell?
Function Of Cell Organelles A B cell membrane tswj kev txav mus rau hauv thiab tawm ntawm lub cell cytoplasm watery khoom uas muaj ntau cov ntaub ntawv koom nrog hauv cell metabolism endoplasmic reticulum ua txoj hauv kev rau kev thauj khoom thoob plaws hauv lub cell
Dab tsi yog qhov ua haujlwm ntawm Tfiih hauv qhov kev hloov pauv pib ua haujlwm?
(NER)TFIIH yog qhov kev hloov pauv dav dav uas ua haujlwm los nrhiav RNA Pol II rau cov neeg txhawb nqa ntawm cov noob. Nws ua haujlwm raws li lub helicase uas unwinds DNA. Nws kuj tseem tshem tawm DNA tom qab qhov mob DNA tau lees paub los ntawm txoj kev kho genome thoob ntiaj teb (GGR) lossis txoj kev hloov pauv-coupled kho (TCR) txoj hauv kev ntawm NER