Dab tsi yog qhov tseem ceeb ntawm polypeptide synthesis?
Dab tsi yog qhov tseem ceeb ntawm polypeptide synthesis?

Video: Dab tsi yog qhov tseem ceeb ntawm polypeptide synthesis?

Video: Dab tsi yog qhov tseem ceeb ntawm polypeptide synthesis?
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Lub ribosome sib sau ua ke cov amino acids raug tsim los ua ib qho tshiab protein ntau . Cov protein yog tseem ceeb nyob rau hauv txhua lub hlwb thiab ua haujlwm sib txawv, xws li koom nrog cov pa roj carbon dioxide rau hauv qab zib hauv cov nroj tsuag thiab tiv thaiv cov kab mob los ntawm cov tshuaj phem. Yog protein synthesis mus tsis ncaj ncees lawm, kab mob xws li mob qog noj ntshav tuaj yeem tshwm sim.

Tsis tas li ntawd, kev ua haujlwm ntawm polypeptide synthesis yog dab tsi?

Polypeptide synthesis yog cov khoom siv roj ntsha ntawm peptides , uas yog cov organic tebchaw uas muaj ntau yam amino acids txuas ntawm peptide bonds. Polypeptides Thaum xub thawj muaj 1 lossis ntau dua cov amino acids, cov amino acids ntxiv yog tsim cov blocks cov proteins Txawm li cas los xij, proetins yog lub tsev thaiv rau cov kab mob.

Tsis tas li ntawd, polypeptide synthesized li cas? Koj lub hlwb siv lub cev qhuav dej synthesis txhawm rau txuas ntau cov amino acids ua ke thiab tsim ib qho polypeptide saw hlau. Thaum lub sij hawm tus txheej txheem no, ib tug dej molecule raug tshem tawm uas tsim ib tug peptide daim ntawv cog lus ntawm ob amino acids. Txhua polypeptide saw yog ib tug series ntawm cov amino acids koom ua ke nyob rau hauv ib tug tej yam ib theem zuj zus.

Tsis tas li ntawd, kev ua haujlwm ntawm cov protein synthesis yog dab tsi?

Ribosomal RNA (rRNA) koom nrog cov txheej txheem ntawm cov protein los tsim ribosomes. Cov qauv no complex, uas lub cev txav raws ib tug mRNA molecule, catalyze lub sib dhos ntawm cov amino acids rau hauv cov protein chains. Lawv kuj khi tRNAs thiab ntau yam khoom siv molecules tsim nyog rau kev tsim cov protein.

Puas yog polypeptide synthesis tib yam li protein synthesis?

Txij li feem coob ntawm cov noob tau hloov mus rau mRNA thiab mRNA tom qab tau muab txhais ua polypeptides los yog cov proteins , feem ntau gene code rau protein synthesis . Thaum tag nrho Cov proteins yog polypeptides , tsis yog tag nrho polypeptides yog cov proteins.

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