TRNA tsim li cas?
TRNA tsim li cas?

Video: TRNA tsim li cas?

Video: TRNA tsim li cas?
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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.

Ib yam li ntawd, tib neeg nug, qhov twg yog tRNA tsim?

Hauv eukaryotes, tRNA yog tsim nyob rau hauv lub nucleus los ntawm DNA qauv los ntawm RNA Polymerase III, hloov muaj (nrog rau cov excision ntawm introns thiab txuas ntawm nws coj amino acid), ces exported los ntawm lub nucleus mus rau lub cytoplasm rau siv nyob rau hauv ua cov proteins tshiab.

Qhov thib ob, tRNA txhais li cas? Thaum kev sau ntawv , tus xa xov ribonucleic acid, lossis mRNA, yog tsim los ntawm DNA qauv. Qhov mRNA no ua ke nrog ribosomal RNA, hu ua rRNA, thiab hloov RNA, lossis tRNA , complex los txhais cov mRNA code rau hauv cov amino acid sequence, protein. Txhua lub hauv paus hauv DNA phim lwm lub hauv paus.

Hauv qhov no, rRNA thiab tRNA tsim li cas?

Hauv eukaryotes, pre- rRNAs yog transcribed, tiav, thiab sib sau ua ke rau hauv ribosomes nyob rau hauv lub nucleolus, thaum pre- tRNAs yog transcribed thiab ua tiav nyob rau hauv lub nucleus thiab ces tso rau hauv lub cytoplasm qhov twg lawv txuas mus rau dawb amino acids rau protein synthesis.

Puas yog tRNA tsim los ntawm DNA?

Hloov RNA, lossis tRNA , yog ib tug tswv cuab ntawm tsev neeg nucleic acid hu ua ribonucleic acids. RNA molecules muaj nucleotides, uas yog cov tsev me me rau RNA thiab DNA . tRNA muaj lub hom phiaj tshwj xeeb: coj cov protein subunits, hu ua amino acids, mus rau ribosome qhov twg cov proteins tsim.

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