Video: Vim li cas mRNA tseem ceeb hauv kev sau ntawv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
mRNA yog lub molecule uas nqa cov lus uas muaj nyob rau hauv DNA mus rau lub ribosome. Ribosomes yog qhov chaw tsim cov protein. mRNA yog tseem ceeb vim ribosomes tsis tuaj yeem ncav cuag DNA hauv peb lub cell nucleus, uas yog qhov chaw nyob hauv lub cell uas DNA nyob. DNA yog tsim los ntawm molecules hu ua bases.
Ntawm no, lub luag haujlwm ntawm mRNA yog dab tsi hauv kev sau thiab txhais lus?
Neeg xa xov liaison RNA nqa cov lus qhia rau kev ua cov protein Cov txheej txheem ntawm kev ua mRNA los ntawm DNA yog hu ua kev sau ntawv , thiab nws tshwm sim nyob rau hauv lub nucleus. Cov mRNA directs lub synthesis ntawm cov protein, uas tshwm sim nyob rau hauv lub cytoplasm. Ua cov protein los ntawm mRNA hu ua txhais lus.
Tsis tas li ntawd, lub hom phiaj ntawm mRNA yog dab tsi hauv kev tsim cov protein? Protein synthesis yog ib tug ntau yam txheej txheem biological. Nws muaj ib tug cellular tivthaiv uas koom nyob rau hauv txhua yam protein synthesis cov kauj ruam. Cov khoom tseem ceeb no hu ua tub txib RNA ” (ua raws li mRNA ). Cov Lub luag haujlwm ntawm mRNA hauv kev tsim cov protein yog hloov cov ntaub ntawv encoded hauv DNA mus rau cytoplasm.
Raws li txoj cai, mRNA ua li cas thaum hloov pauv?
Thaum transcription , DNA ntawm cov noob ua haujlwm ua tus qauv rau kev sib koom ua ke ntawm kev sib koom ua ke, thiab ib qho enzyme hu ua RNA polymerase II catalyzes tsim ua ntej. mRNA molecule, uas tom qab ntawd ua tiav los ua kom paub tab mRNA (Daim duab 1). Daim duab 2: Cov amino acids tau teev tseg los ntawm txhua tus mRNA codon.
Yuav ua li cas rau mRNA tom qab transcription?
Thaum kawg, tom qab ua ntej- mRNA yog luam tawm , nws tau txais poly-A tail. Tshwj xeeb poly-A-binding proteins tsim ib txoj hauv kev nrog poly-A tail kom ruaj khov thiab ntim khoom ntxiv. mRNA . Tom qab tag nrho cov uas yog tiav, lub mRNA yog xa tawm los ntawm lub nucleus mus rau hauv cytoplasm, qhov twg nws yuav raug txhais.
Pom zoo:
Vim li cas qhov tseem ceeb ntawm qhov tseem ceeb?
Thaum koj pom tus nqi kiag li hauv qhov teeb meem lossis qhov sib npaug, nws txhais tau hais tias txhua yam nyob hauv tus nqi tiag tiag yog qhov zoo. Cov txiaj ntsig tsis zoo feem ntau siv rau hauv cov teeb meem cuam tshuam nrog kev nyob deb thiab qee zaum siv nrog qhov tsis sib xws. Qhov ntawd yog qhov tseem ceeb uas yuav tsum nco ntsoov nws zoo li qhov deb ntawm xoom
Vim li cas cov nuj nqis tseem ceeb tseem ceeb thaum qhia txog kev ntsuas?
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
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
Vim li cas kev ntsuas thiab ntsuas qhov tseem ceeb hauv kev tshawb fawb txog kev lag luam?
Cov nplai tau siv ntau zaus hauv kev tshawb fawb kev lag luam vim tias lawv pab hloov cov ntaub ntawv zoo (xav, kev xav, kev xav) rau hauv cov ntaub ntawv ntau, cov lej uas tuaj yeem txheeb xyuas tau. Koj tsim ib qho kev ntsuas los ntawm kev muab cov khoom (yuav ua tau piav qhia) rau tus lej
Vim li cas nws tseem ceeb uas yuav tsum rov ua qhov kev sim thiab sim cov kev xav hauv ntau txoj kev?
Nws yog ib qho tseem ceeb rau cov kws tshawb fawb kom rov sim dua thaum ua qhov kev sim vim tias qhov kev txiav txim siab yuav tsum raug lees paub. Muaj tseeb vim tias cov txiaj ntsig ntawm txhua qhov kev xeem yuav tsum zoo sib xws. Lwm cov kws tshawb fawb yuav tsum tuaj yeem rov ua koj qhov kev sim thiab tau txais cov txiaj ntsig zoo sib xws. Tib txoj hauv kev los ntsuas qhov kev xav yog ua qhov kev sim