Kev txhais yuav siv qhov chaw hauv lub nucleus. Nws siv DNA ua tus qauv los ua RNA molecule. RNA ces tawm ntawm lub nucleus thiab mus rau ib tug ribosome nyob rau hauv lub cytoplasm, qhov chaw txhais lus tshwm sim. Kev txhais lus nyeem cov caj ces hauv mRNA thiab ua rau cov protein.
Thaum nyob rau hauv lub voj voog ntawm tes puas muaj cov ntaub ntawv sau tseg?
Cells cog lus kom nkag mus rau lub voj voog ntawm tes tshiab thaum G1 los ntawm kev ua kom cyclin-CDK-dependent transcription (Fig. 1). G1–S transcriptional activation thaum lub sij hawm lig G1 txhawb kev nkag mus rau theem S tom qab qhov kev qhia raug muab tua. Qhov no tsim nthwv dej ntawm kev sau, uas nce siab ntawm G1-rau-S kev hloov pauv (BOX 1).
qhov kev hloov pauv tshwm sim hauv lub xov tooj nyob qhov twg?
Yog li, hauv eukaryotes, thaum transcription tshwm sim hauv lub nucleus, kev txhais lus tshwm sim hauv cytoplasm.
Lub sijhawm ntawm lub voj voog ntawm tes ua li cas thiab txhais lus tshwm sim?
DNA replication tshwm sim nyob rau hauv the S-theem hauv interphase thaum lub xovtooj ntawm tes tau txais teeb liab pib npaj rau kev faib. Ntawm no. DNA yuav faib semiconservatively. DNA transcription thiab DNA txhais lus yog ib feem ntawm protein synthesis.
Kev txhais lus yog dab tsi thiab vim li cas thiaj tshwm sim?
Kev txhais lus yog txheej txheem uas cov ntaub ntawv hauv ib txoj hlua DNA tau theej rau hauv ib lub qauv tshiab ntawm tus tub txib RNA (mRNA). DNA muaj kev nyab xeeb thiab ruaj khov khaws cov khoom siv caj ces hauv cov nuclei ntawm cov hlwb raws li kev siv, lossis qauv.
