Video: Thaum tRNA tso nws cov amino acid dab tsi tshwm sim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thawj tRNA hloov tsheb nws cov amino acid mus rau amino acid ntawm tus tshiab tuaj txog tRNA , thiab ib daim ntawv cog lus tshuaj yog tsim los ntawm ob amino acids . Cov tRNA uas tau tso tseg nws cov amino acid yog tso tawm . Nws tuaj yeem khi rau lwm lub molecule ntawm lub amino acid thiab siv dua tom qab hauv cov txheej txheem ua cov protein.
Ntawm no, yuav ua li cas tshwm sim rau lub unattached tRNA thaum nws tau xa nws cov amino acid?
Nws raug tso tawm rov qab rau hauv cytoplasm thiab nws mam li khaws lwm tus ntawm tib yam amino acids uas tseem ntab hauv cytoplasm. Cov tshuaj tiv thaiv no hydrolyzes polypeptide saw los ntawm cov tRNA , cia cov protein tawm ntawm ribosome.
Kuj Paub, tRNA lub luag haujlwm ua dab tsi? Muaj nuj nqi ntawm tRNA . Txoj haujlwm ntawm tRNA yog nyeem cov lus ntawm nucleic acids, los yog nucleotides, thiab txhais mus rau hauv cov proteins, los yog amino acids. Cov txheej txheem ntawm ua ib qho protein los ntawm mRNA template hu ua kev txhais lus.
Hais txog qhov no, tRNA khi rau cov amino acid li cas?
A tRNA molecule muaj "L" qauv tuav ua ke los ntawm hydrogen bonds ntawm lub hauv paus nyob rau hauv ntau qhov chaw ntawm lub tRNA ib ntus. Ib kawg ntawm tRNA sib rau ib qho tshwj xeeb amino acid ( amino acid Symptoms site) thiab lwm qhov kawg muaj ib qho anticodon uas yuav khi rau mRNA codon.
Yuav ua li cas tshwm sim rau tRNA tom qab nws coj cov amino acids mus rau ribosome?
Thaum khi rau mRNA, lub tRNA muab nws amino acid . Bonds tsim ntawm ib sab amino acids raws li lawv yog coj ib los ntawm ib tug mus rau lub ribosome , tsim cov saw hlau polypeptide. Cov saw ntawm amino acids ua kom loj hlob mus txog thaum nres codon mus txog.
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