Video: Lwm lub npe rau rRNA yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lwm txoj Lub npe: rRNA , ribosomal ua ribonucleic acid. Ribosomal RNA ( rRNA ), molecule incells uas tsim ib feem ntawm cov protein-synthesizing organelle hu ua ribosome thiab uas raug xa mus rau cytoplasm los pab txhais cov ntaub ntawv hauv messenger RNA (mRNA) rau hauv cov protein.
Ib yam li ntawd, tib neeg nug, dab tsi yog rRNA hauv biology?
Ribosomal RNA ( rRNA ) yog ib feem ntawm theribosome, los yog protein builders, ntawm tes. Ribosomes yog lub luag haujlwm rau kev txhais lus, lossis cov txheej txheem peb cov hlwb siv los ua cov protein. rRNA yog lub luag haujlwm rau kev nyeem cov lus txiav txim ntawm cov amino acids thiab txuas cov amino acids ua ke. Lawv ua qhov no los ntawm kev ua ntu zus.
Ib yam li ntawd, vim li cas 16s rRNA siv los txheeb xyuas cov kab mob? Cov 16 S ribosomal RNA gene codes rau RNAcomponent ntawm 30S subunit ntawm lub kab mob ribosome. Vim qhov nyuaj ntawm DNA-DNA hybridization, 16 SrRNA gene sequencing yog siv raws li lub cuab yeej rau txheeb xyuas cov kab mob nyob rau theem hom thiab pab nrog kev sib txawv ntawm kev sib raug zoo kab mob laj [8].
Ntawm no, puas yog rRNA transcription lossis txhais?
Ob leeg tRNA (hloov RNA) thiab rRNA ( ribosomalRNA ua ) yog cov khoom ntawm kev sau ntawv . Txawm li cas los xij, lawv tsis ua raws li tus qauv ntawm txhais lus . tRNA yog lub luag haujlwm rau nqa cov amino acid kom raug thaum lub sijhawm txhais lus . rRNA ua rau lub ribosome, uas yog lub luag haujlwm rau enzyme txhais lus.
18s thiab 28s rRNA yog dab tsi?
Cov 28 S / 18S ribosomal RNA feem ntau yog siv los ntsuas qhov zoo ntawm tag nrho RNA purified los ntawm ib qho qauv muab. Hauv tib neeg, 28 S rRNA muaj ~ 5070 nucleotides, thiab 18 S muaj 1869 nucleotides, uas muab a 28 S / 18 S piv ~ 2.7. Ib siab 28 S / 18 S ratio yog ib qho qhia tau hais tias cov purified RNA tsis zoo thiab tsis tau degraded.
Pom zoo:
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