Video: Yuav ua li cas aminoacyl tRNA tsim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib aminoacyl - tRNA synthetase (aaRS lossis ARS), kuj hu ua tRNA -ligase, yog ib qho enzyme uas txuas cov amino acid tsim nyog rau nws tRNA . Nws ua li ntawd los ntawm catalyzing lub esterification ntawm ib tug tshwj xeeb cognate amino acid los yog nws precursor rau ib tug ntawm tag nrho cov tau tshaj cognate tRNAs rau daim ntawv ib aminoacyl - tRNA.
Ua raws li qhov kev pom no, tRNA yuav raug them li cas?
Ua ntej ib qho amino acid tuaj yeem muab tso rau hauv ib qho kev loj hlob ntawm polypeptide, nws yuav tsum xub muab txuas rau lub molecule hu ua hloov RNA, los yog tRNA , nyob rau hauv ib tug txheej txheem hu ua tRNA them nqi. Cov them tRNA Tom qab ntawd yuav nqa cov activated amino acid mus rau ribosome.
Ib sab saum toj no, lub luag haujlwm ntawm aminoacyl tRNA synthetase yog dab tsi? Aminoacyl - tRNA synthetases (aaRS) ua si hauv nruab nrab luag hauj lwm hauv protein ntau biosynthesis los ntawm catalyzing qhov txuas ntawm cov amino acid muab rau 3' kawg ntawm nws cov cognate tRNA . Lawv ua qhov no los ntawm kev tsim lub zog nplua nuj aminoacyl -adenylate nruab nrab ntawm cognate amino acid, uas ua haujlwm hloov cov amino acid mus rau tRNA.
Yog li ntawd, cov amino acid twg yog tsim los ntawm tRNA?
Synthesis. Aminoacyl-tRNA yog tsim nyob rau hauv ob kauj ruam. Ua ntej yog qhov adenylation ntawm cov amino acid, uas tsim aminoacyl-AMP Cov amino acid + ATP ↔ aminoacyl-AMP + PIB.
Aminoacyl txhais li cas?
Noun. aminoacyl (plural aminoacyl) (organic chemistry) Ib qho ntawm cov chav kawm ntawm cov organic radicals, tsim los ntawm kev tshem tawm ntawm pawg hydroxyl los ntawm cov amino acid.
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