Qhov twg yog cytosolic proteins synthesized?
Qhov twg yog cytosolic proteins synthesized?

Video: Qhov twg yog cytosolic proteins synthesized?

Video: Qhov twg yog cytosolic proteins synthesized?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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Cytosolic proteins thiab cov proteins uas yog destined rau lub nucleus, mitochondria, chloroplasts thiab peroxisomes (koj yuav kawm txog lwm yam organelles tom qab hauv chav kawm no) yog ua ke los ntawm cov dawb ribosomes nyob rau hauv lub cytosol.

Tom qab ntawd, ib tug kuj yuav nug, qhov twg yog cov proteins synthesized?

Art of Protein Synthesis Nyob rau hauv eukaryotic hlwb, transcription tshwm sim nyob rau hauv lub nucleus. Thaum lub sijhawm sau ntawv, DNA yog siv los ua tus qauv los ua ib qho molecule ntawm tus xa xov RNA (mRNA). Cov molecule ntawm mRNA ces tawm ntawm lub nucleus thiab mus rau ib tug ribosome nyob rau hauv lub cytoplasm, qhov chaw txhais lus tshwm sim.

Tom qab, lo lus nug yog, yuav ua li cas proteins yog synthesized? Proteins yog synthesized stepwise los ntawm polymerization ntawm amino acids nyob rau hauv ib tug unidirectional yam, pib ntawm N-terminus thiab xaus ntawm C-terminus. Cov amino acids txuas los ntawm kev tsim cov peptide bonds, thiab cov txiaj ntsig polypeptide saw muaj ib qho ntawm 20 cov amino acids sib txawv ntawm txhua txoj haujlwm.

Kuj Paub, qhov twg yog cov proteins nyob rau hauv chloroplast synthesized?

Txawm tias chloroplasts encode ntau ntawm lawv tus kheej cov proteins tshaj mitochondria, txog 90% ntawm chloroplast cov protein tseem encoded los ntawm nuclear noob. Raws li nrog mitochondria, cov no cov proteins yog ua ke ntawm cytosolic ribosomes thiab ces import rau hauv chloroplasts raws li ua tiav polypeptide chains.

Qhov twg protein synthesis hauv neurons tshwm sim?

Protein synthesis tshwm sim nyob rau hauv ntau lub compartments nyob rau hauv neurons kom suav nrog lub dendrite, axon, thiab lub paj hlwb.

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