Yuav ua li cas mRNA thauj tawm ntawm lub nucleus?
Yuav ua li cas mRNA thauj tawm ntawm lub nucleus?

Video: Yuav ua li cas mRNA thauj tawm ntawm lub nucleus?

Video: Yuav ua li cas mRNA thauj tawm ntawm lub nucleus?
Video: Chaw faus neeg tuag kab mob covid 19 2024, Kaum ib hlis
Anonim

Tom qab mRNA yog synthesized los ntawm DNA thaum transcription, tus tshiab molecule txav los ntawm lub nucleus mus rau lub cytoplasm, dhau los ntawm nuclear membrane los ntawm ib tug nuclear pore. Ribosomes yog qhov chaw ntawm kev txhais lus, lossis siv cov ntaub ntawv hauv mRNA los tsim cov protein sib xws.

Xav txog qhov no, ua li cas mRNA tawm ntawm lub nucleus?

Messenger RNA, los yog mRNA , tawm lub nucleus los ntawm cov pores nyob rau hauv lub nuclear membrane. Cov pores no tswj kev nkag ntawm cov molecules ntawm cov nucleus thiab cytoplasm. mRNA Kev ua haujlwm tsuas yog tshwm sim hauv eukaryotes.

Ib sab saum toj no, mRNA ua li cas tawm hauv cov lus nug nucleus? Cov mRNA tawm ntawm nucleus ntawm lub qhov pores ntawm nuclear, mus rau hauv cytoplasm rau kev txhais lus. Piav cov txheej txheem ntawm kev txhais lus. Hloov mRNA mus rau hauv cov proteins thiab tshwm sim nyob rau hauv lub cytoplasm, nrog kev pab los ntawm ribosomes ntawm ntxhib Endoplasmic reticulum thiab dawb nyob rau hauv lub cytoplasm.

Tsis tas li, mRNA thauj mus li cas?

mRNA tsim nyob rau hauv lub nucleus yog thauj tawm ntawm lub nucleus thiab mus rau hauv cytoplasm qhov twg nws txuas rau ribosomes. Proteins yog sib sau ua ke ntawm ribosomes siv lub mRNA nucleotide raws li kev qhia. Yog li, mRNA nqa ib "lus" los ntawm lub nucleus mus rau cytoplasm.

Tus qauv ntawm mRNA yog dab tsi?

Cov qauv ntawm ib tug paub tab eukaryotic mRNA . Kev ua tiav tiav mRNA suav nrog 5 'cap, 5' UTR, coding cheeb tsam, 3' UTR, thiab poly(A) tail.

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