Nyob hauv eukaryotic hlwb, feem ntau lees txais tias protein synthesis yog compartmentalized; Soluble proteins yog synthesized ntawm dawb ribosomes, whereas secretory thiab membrane proteins synthesized ntawm endoplasmic reticulum(ER)-bound ribosomes.
Puas ribosomes membrane khi?
Txhua lub hlwb muaj ribosomes, cov organelles me me uas muaj li ntawm 60 feem pua ribosomal RNA (rRNA) thiab 40 feem pua ntawm cov protein. Txawm li cas los xij, txawm hais tias lawv feem ntau tau piav qhia tias yog organelles, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias ribosomes tsis khi los ntawm daim nyias nyiasthiab me dua li lwm cov organelles.
ribosomes khi nyob qhov twg?
Ib qho endoplasmic reticulum nrog ribosomes txuas rau nws yog hu ua ntxhib endoplasmic reticulum. Thaum cov ribosomes txuas nrog, lawv tsis tuaj yeem txav mus los ntawm lub cell. Bound ribosomes txuas rau cytosolic sab ntawm endoplasmic reticulum.
Lub luag haujlwm ntawm kev khi ribosomes yog dab tsi?
Txuas ribosomes yog lub luag haujlwm rau tsim cov proteins uas yuav yog ib feem ntawm daim nyias nyiaslossis uas yuav muab khaws cia rau hauv chav hu ua vesicles. Bound ribosomes kuj txhais mRNA rau cov proteins uas yuav txav mus rau sab nraud ntawm tes.
Dab tsi qhov txawv ntawm pub dawb thiab khi ribosomes?
Dawb ribosomes muaj nyob rau hauv cytosol, cov kua dej hauv lub cell thiab tsis txuas rau lwm yam qauv. … Thaum cov ribosomes membrane-bound tsim cov proteins uas raug xa tawm ntawm lub xov tooj mus rau lwm qhov, cov ribosomes dawb tsim cov proteins siv hauv lub cell nws tus kheej
