Video: Yuav ua li cas thaum splicing?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
RNA splicing yog kev tshem tawm ntawm introns thiab koom nrog exons hauv eukaryotic mRNA. Nws kuj tshwm sim hauv tRNA thiab rRNA. Lawv nrhiav qhov kawg ntawm cov introns, txiav lawv deb ntawm exons, thiab koom nrog qhov kawg ntawm cov exons uas nyob ib sab ua ke. Thaum tag nrho cov noob yog devoid ntawm nws introns, tus txheej txheem ntawm RNA splicing ua tiav.
Kuj paub yog, dab tsi tshwm sim thaum RNA splicing?
RNA sib txuas yog txheej txheem uas tshem tawm cov kev cuam tshuam, tsis yog-coding sequences ntawm cov noob (introns) los ntawm pre-mRNA thiab koom nrog cov protein-coding sequences (exons) ua ke txhawm rau txhawm rau pab txhais cov mRNA rau hauv cov protein.
Ib sab saum toj, vim li cas splicing tseem ceeb? Qhov tseem ceeb ntawm RNA splicing tsis to taub tag nrho, tab sis tus txheej txheem sawv cev ib tseem ceeb taw tes ntawm cov noob tswj, txij li feem ntau cov ntaub ntawv sau tseg tsis tuaj yeem tawm hauv lub nucleus los txhais kom txog thaum lawv cov introns raug tshem tawm. Qhov cuam tshuam ntawm splicing kuj yog tseem ceeb rau manipulation ntawm cov ntaub ntawv genetic.
Raws li kev sib raug zoo, gene splicing ua haujlwm li cas?
Gene splicing yog ib qho kev hloov pauv hloov tom qab uas ib leeg noob muaj peev xwm code rau ntau yam proteins. Gene Splicing yog ua tiav hauv eukaryotes, ua ntej mRNA txhais lus, los ntawm qhov sib txawv ntawm kev suav nrog lossis tsis suav nrog thaj tsam ntawm pre-mRNA. Gene splicing yog pom nyob rau hauv siab feem ntawm noob.
Yuav ua li cas yog tias splicing tsis tshwm sim?
Yog lub spliceosome tsis tshem tawm ib qho intron, ib qho mRNA nrog ntxiv "quav" hauv nws yuav yuav ua, thiab ib tug tsis ncaj ncees lawm protein yuav tau tsim thaum lub sij hawm txhais lus. Splicing yuav tsum tau meej thiab zoo ib yam.
Pom zoo:
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