Qhov kev txhais lus ntawm secreted proteins tshwm sim?
Qhov kev txhais lus ntawm secreted proteins tshwm sim?

Video: Qhov kev txhais lus ntawm secreted proteins tshwm sim?

Video: Qhov kev txhais lus ntawm secreted proteins tshwm sim?
Video: qhov txhab kev hlub 2024, Kaum ib hlis
Anonim

Kev txhais lus tshwm sim ntawm cov chaw tshwj xeeb hauv cytoplasm; nws tshwm sim ntawm ribosomes. Ribosomes yog cov sib sau loj ntawm cov proteins thiab ribosomal RNA (rRNA). Li no peb hom RNA koom nrog hauv cov txheej txheem ntawm txhais lus tab sis tsuas yog ib qho ntawm lawv, mRNA, cov lej rau cov proteins.

Yog li ntawd, qhov twg secreted proteins quav?

Protein folding tshwm sim nyob rau hauv lub cellular compartment hu ua endoplasmic reticulum. Qhov no yog ib qho tseem ceeb ntawm cellular txheej txheem vim cov proteins yuav tsum raug muab tais rau hauv cov duab peb-dimensional tshwj xeeb kom ua haujlwm kom raug.

Tsis tas li ntawd, cov txheej txheem ntawm cov protein tso tawm yog dab tsi? Protein secretion . Protein secretion yog multistep txheej txheem uas suav nrog vesicle biogenesis, cargo loading, concentration thiab processing, vesicle transport and targeting, vesicle docking and Ca2+-dependent vesicular fusion with the plasma membrane.

Kuj kom paub, qhov twg txhais lus tshwm sim?

Nyob rau hauv ib tug prokaryotic cell, transcription thiab txhais lus ua ke; uas yog, txhais lus pib thaum lub mRNA tseem tab tom ua ke. Nyob rau hauv ib tug eukaryotic cell, transcription tshwm sim nyob rau hauv lub nucleus, thiab txhais lus tshwm sim hauv cytoplasm.

Qhov twg tsim cov ribosomal subunits tshwm sim?

Eukaryote cov ribosomes yog tsim thiab sib sau ua ke hauv cov nucleolus. Ribosomal proteins nkag mus rau hauv lub nucleolus thiab ua ke nrog plaub rRNA strands los tsim ob ribosomal subunits (ib qho me me thiab ib qho loj) uas yuav ua kom tiav ribosome (saib daim duab 1).

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