Video: Koj txhais li cas los ntawm kev them nyiaj ntawm tRNA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev them nyiaj yug tRNA . Ua ntej ib qho amino acid ua tau tau muab tso rau hauv ib qho kev loj hlob polypeptide, nws yuav tsum xub muab txuas mus rau lub molecule hu ua hloov RNA, los yog tRNA , nyob rau hauv ib tug txheej txheem hu ua tRNA them . Cov them tRNA yuav Tom qab ntawd nqa cov activated amino acid mus rau ribosome.
Tsuas yog li ntawd, Aminoacylation yog dab tsi los yog them nyiaj ntawm tRNA?
Ib aminoacyl - tRNA synthetase (aaRS lossis ARS), kuj hu ua tRNA -ligase, yog ib qho enzyme uas txuas cov amino acid tsim nyog rau nws tRNA . Qhov no qee zaum hu ua " them nqi "los yog "loading". tRNA nrog cov amino acid.
Ib tug kuj yuav nug, tRNA tsim li cas? Synthesis ntawm tRNA Hauv eukaryotic hlwb, tRNA yog tsim los ntawm cov protein tshwj xeeb uas nyeem DNA code thiab ua RNA luam, lossis ua ntej. tRNA . Cov txheej txheem no hu ua transcription thiab ua tRNA , nws yog ua los ntawm RNA polymerase III. Ua ntej- tRNA raug ua tiav thaum lawv tawm hauv lub nucleus.
Yog li ntawd, vim li cas thiaj li them tRNA tsim nyog thaum txhais lus?
Kev them nyiaj ntawm tRNA nyob rau hauv lub siab ntawm loading ib tug amino acid mus rau lub tRNA yog li ntawd qhov tseem ceeb rau cov protein synthesis li lwm yam ribosomes tsis tuaj yeem hloov cov noob caj noob ces siv hauv mRNAs rau hauv cov saw ntawm amino-acids raws li pom hauv cov protein.
Daim ntawv tag nrho ntawm tRNA yog dab tsi?
Hloov ribonucleic acid ( tRNA ) yog ib hom RNA molecule uas pab txiav txim siab tus tub txib RNA (mRNA) sib lawv liag rau hauv cov protein. Txhua tRNA muaj nws cov amino acid sib txuas nrog rau nws qhov kawg.
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