Thaum cov ribosomal subunits cais?

Cov txheej txheem:

Thaum cov ribosomal subunits cais?
Thaum cov ribosomal subunits cais?
Anonim

Thaum cov protein ntau tsis tau ua tiav, ob lub subunits ntawm ribosome raug cais. Xyoo 2000, qhov ua tiav peb-dimensional qauv ntawm cov loj thiab me subunits ntawm ib tug ribosome tau tsim.

Yuav ua li cas rau cov ribosomal subunits?

Thaum ua ke cov protein tshiab, ob lub subunits kaw ua ke nrog tus xa xov RNA dai rau hauv qhov chaw nruab nrab ntawm. Lub ribosome mam li taug kev los ntawm tus xa xov RNA peb nucleotides ntawm ib lub sij hawm, tsim cov protein tshiab ib zaug. Loj subunit ntawm lub ribosome, nrog cov catalytic RNA nucleotide nyob rau hauv ntsuab.

Yuav ua li cas rau ntawm cov ribosomal subunits me thiab loj?

Lub subunit me me ("40S" hauv eukaryotes) txiav txim siab cov lus caj ces thiab cov subunit loj ("60S" hauv eukaryotes) catalyzes peptide daim ntawv cog lus.

Yuav ua li cas ribosomal subunits tuav ua ke?

Ob lub subunits (30S thiab 50S) ntawm cov kab mob 70S ribosome yog tuav ua ke los ntawm 12 dynamic txuas nrog RNA–RNA, RNA–protein, thiab protein-protein kev sib cuam tshuam. Cov txheej txheem ntawm kev tsim choj, xws li seb tag nrho cov txuas hniav no tau tsim ib txhij los yog nyob rau hauv ib qho kev txiav txim, tsis to taub.

Yuav ua li cas rau ribosomal subunits tom qab txhais?

Thaum lub sijhawm txhais lus, ob lub subunits tuaj ua ke nyob ib ncig ntawm mRNA molecule, ua tiav ribosome. Lub ribosome txav mus rau pem hauv ntej ntawm mRNA, codon los ntawm codon, raws li nwsyog nyeem thiab txhais ua polypeptide (protein chain). Tom qab ntawd, thaum txhais tiav lawm, ob daim tuaj sib nrug dua thiab tuaj yeem rov siv dua.

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