Video: Yuav ua li cas yog tias tus kab mob HIV muaj qhov tsis ua haujlwm rov qab transcriptase enzyme?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov cov enzymes yog encoded thiab siv los ntawm kab mob uas siv rov qab transcription raws li ib kauj ruam nyob rau hauv tus txheej txheem ntawm replication. HIV kis rau tib neeg nrog kev siv qhov no enzyme . Tsis muaj rov qab transcriptase , cov kab mob genome yuav tsis tuaj yeem koom ua ke rau hauv tus tswv tsev cell, ua rau tsis ua haujlwm rov ua dua.
Hais txog qhov no, kev ua haujlwm ntawm HIV kab mob enzyme thim rov qab transcriptase yog dab tsi?
Ib enzyme (cov protein) uas yog ib feem ntawm tib neeg kev tiv thaiv kab mob kab mob vais lav nyeem cov kab ke ntawm kab mob RNA nucleic acids (daj hauv daim duab) uas tau nkag mus rau hauv lub xov tooj ntawm tes thiab sau cov kab ke mus rau hauv cov kab ke DNA ntxiv (pom xiav). Qhov ntawd enzyme hu ua " rov qab transcriptase ".
Ib yam li ntawd, txhua tus kab mob puas muaj qhov rov qab transcriptase? Thaum nyob rau hauv lub host cell lub cytoplasm, lub kab mob vais lav siv nws tus kheej rov qab transcriptase enzyme tsim DNA los ntawm nws cov RNA genome, lub thim rov qab ntawm cov qauv ib txwm, yog li retro (rov qab). Hauv feem ntau cov kab mob , DNA yog transcribed rau hauv RNA, thiab ces RNA yog txhais ua protein.
Ib yam li ntawd, tib neeg nug, vim li cas rov qab transcriptase tseem ceeb?
Txawm hais tias nws txawv heev ntawm cov txheej txheem ib txwm muaj, rov qab transcriptase yog ib tseem ceeb enzyme. Nws yog tsim nyog rau kev ua haujlwm hauv cov kab mob, eukaryotes thiab prokaryotes. Rov qab transcriptase enzymes nyob rau hauv cov hlwb muaj kev koom tes nyob rau hauv genetic ntau haiv neeg thiab nyob rau hauv tus txheej txheem ntawm kev laus nyob rau hauv eukaryotic hlwb.
Puas yog HIV tsuas yog retrovirus?
HIV yog cais raws li ib tug retrovirus vim nws muaj cov ntaub ntawv rov qab transcriptase. Nws yog tus kab mob D-hom kab mob hauv tsev neeg Lentivirus. Kab mob ntawm kab mob T4 hlwb nrog HIV feem ntau ua rau cell tuag.
Pom zoo:
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Yuav ua li cas koj thiaj paub yog tias tus nqi tsis sib xws tsis muaj kev daws teeb meem?
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