A ribosome khi ib tRNA ib zaug. Ib qho procaryotic mRNA molecule tuaj yeem muab txhais ua ntau yam proteins. Ribosomes yuav tsum khi rau 5′ cap ua ntej pib txhais lus.
Puas muaj pes tsawg tRNA tuaj yeem nyob hauv ib lub ribosome ib zaug?
Cov ribosome muaj peb tRNA khi qhov chaw sib txuas rau peb codons uas nyob ib sab1 Raws li nws elongates, lub ribosome repetitively xaiv aminoacylated tRNA ntawm lub Ib qhov chaw, taw qhia lawv rau peptide daim ntawv cog lus nrog peptidyl tRNA nyob rau hauv P site.
YDo ribosomes khi rau tRNA?
Ribosomes muaj peb tRNA khi qhov chaw, uas yog, A (aminoacyl) rau cov aminoacyl-tRNA (aa-tRNA), P (peptidyl) kom ruaj khov ntawm cov neeg pib (f) Met-tRNA thaum pib thiab peptidyl-tRNA ntawm elongation ntawm kev txhais lus, thiab E (tawm) rau kev khi ntawm deacylated tRNA ua ntej nws tawm ntawm ribosome.
Puas muaj pes tsawg tRNA binding qhov chaw nyob rau ntawm ribosome?
Lub ribosome siv tRNAs los txuas cov ntsiab lus ntawm RNA thiab cov protein hauv ntiaj teb thaum lub sij hawm tsim cov protein, xws li cov tshuaj tiv thaiv kab mob ua ib chav tsev ntawm cov ntaub ntawv caj ces nrog cov amino acid sib raug raws li lub tsev ntawm cov proteins. Peb tRNA- qhov chaw sib khi yog nyob ntawm ribosome, hu ua qhov chaw A, P thiab E.
ribosomes khi rau tRNAs qhov twg?
tRNA molecules khi rau ribosome hauv cov kuab tshuaj nkag tau ntawm cov subunit interfacePeb qhov chaw khi rau tRNA, hu ua aminoacyl site (A site), peptidyl site (P site), thiab tawm qhov chaw (E site), tau raug txheeb xyuas ntawm ob qhov loj thiab me subunit (Fig. 1).
