Nyob rau hauv prokaryotes, splicing yog ib yam tshwm sim tsis tshua muaj tshwm sim nyob rau hauv tsis-coding RNAs, xws li tRNAs (22). Ntawm qhov tod tes, hauv eukaryotes, splicing feem ntau hu ua trimming introns thiab ligation ntawm exons hauv protein-coding RNAs.
Do prokaryotes splice introns?
Cov kws tshawb fawb tseem tab tom sim xyuas seb yog vim li cas prokaryotes tsis muaj spliceosomal introns. … Ib tug hu ua introns-thaum ntxov (IE). Nws hais tias introns siv nyob rau hauv ob qho tib si prokaryotes thiab eukaryotes, tab sis cov kab mob thiab lwm yam prokaryotes tau ploj lawm.
Puas yog splicing tsis nyob hauv prokaryotes?
Lub tsis muaj introns uas tsis yog tus kheej-splice hauv prokaryotes thiab ob peb lwm cov ntaub ntawv pov thawj qhia txog keeb kwm yav dhau los eukaryotic rau cov introns, thiab tom qab nce thiab poob ntawm introns. zoo nkaus li yog cov txheej txheem tsis tu ncua hauv ntau yam kab mob.
Puas yog Spliceosomes hauv prokaryotes?
Lub luag haujlwm enzyme yog lub spliceosome, muaj tsib lub RNAs me me thiab nce siab ntawm 100 proteins. … Txawm li cas los xij, cov tshuaj tiv thaiv zoo li cov catalyzed los ntawm spliceosome tau ua nyob rau hauv prokaryoteslos ntawm RNAs, hu ua Pawg II tus kheej-splice introns lossis ribozymes.
Puas yog 5 Cap ntxiv ua ntej splicing?
Eukaryotic mRNA precursors tau ua tiav los ntawm 5′ capping, 3′ cleavage thiab polyadenylation, thiab RNA splicing kom tshem tawm introns ua ntej raug thauj mus rau cytoplasm uas lawv tau txhais los ntawm ribosomes.
