2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Reverse transcriptase yog ib qho enzyme uas tsim los ntawm qee cov kab mob (retroviruses, uas khaws lawv cov ntaub ntawv caj ces li RNA tsis yog DNA), uas, raws li lub npe txhais, thim rov qab cov txheej txheem ntawm kev sau npe.
Cov piv txwv ntawm kev txwv enzymes yog dab tsi?
SmaI yog ib qho piv txwv ntawm kev txwv enzyme uas txiav ncaj qha los ntawm DNA strands, tsim DNA tawg nrog ib tug ca los yog blunt kawg. Lwm yam kev txwv enzymes, zoo li EcoRI, txiav los ntawm DNA strands ntawm nucleotides uas tsis yog sib txawv kiag li.
Peb hom kev txwv enzymes yog dab tsi?
Hnub no, cov kws tshawb fawb paub txog peb pawg ntawm kev txwv enzymes: hom I, uas paub txog cov DNA tshwj xeeb tab sis ua rau lawv txiav ntawm qhov chaw seem uas tuaj yeem ncav cuag 1,000 lub hauv paus khub deb ntawm qhov chaw lees paub; hom II, uas lees paub thiab txiav ncaj qha hauv qhov chaw lees paub; thiab type III,…
YPuas yog thim rov qab transcriptase A enzyme?
Reverse transcriptase yog ib qho enzyme uas tsim cov DNA siv RNA ua qauv.
Puas PCR siv txwv cov enzymes?
Kev txwv enzymes tuaj yeem siv siv los tsim kom muaj qhov kawg ntawm PCR cov khoom. Nyob rau hauv txhua rooj plaub, ib lossis ntau qhov txwv enzymes yog siv los zom cov DNA uas ua rau tsis muaj kev taw qhia lossis kev taw qhia nkag mus rau hauv cov plasmid sib xws.
Pom zoo:
Qhov twg yog qhov laj thawj tseem ceeb rau kev thim rov qab / tig rov qab lub tswv yim?
Lub hom phiaj yog txo cov nqi, ua kom cov haujlwm ua haujlwm zoo, lossis ua kom cov nyiaj ntsuab ntws ruaj khov. Peb lub hom phiaj tseem ceeb ntawm kev thim rov qab yog: Txoj Cai Hloov Kho - Qhov no yog lub tswv yim tsim kho dua tshiab. Nws hu kom rov kho cov haujlwm kom tau nyiaj ntau dua lossis tau txais txiaj ntsig.
Cov tshuaj twg yog nucleoside thim rov qab transcriptase inhibitors?
Available NRTIs zidovudine (Retrovir) Ylamivudine (Epivir) abacavir sulfate (Ziagen) didanosine (Videx) delayed-tso didanosine (Videx EC) stavudine (Zerit) emtricitabine (Emtriva) tenofovir disoproxil fumarate (Viread) Dab tsi yog nucleoside thim rov qab transcriptase enzyme inhibitors?
Puas thim rov qab transcriptase siv dna ua tus qauv?
Reverse transcriptase thawj zaug sau cov khoom sib txuas ntawm DNA los ua RNA: DNA hybrid. Tom ntej no, thim rov qab transcriptase los yog RNase H degrades RNA strand ntawm hybrid. Lub ib leeg-stranded DNA yog siv los ua tus qauv rau kev sib txuas ob-stranded DNA (cDNA).
Puas thim rov qab transcriptase puas muaj ntawv pov thawj?
Reverse transcriptase (RT) enzymes luam RNA rau hauv DNA. Tsis zoo li ntau DNA polymerases, RT enzymes tsis muaj cov ntawv pov thawj uas kuaj xyuasrau qhov tsis raug hauv DNA tshiab. Puas thim rov qab transcriptase muaj kev ua haujlwm kho?
Dab tsi yog qhov thim rov qab transcriptase inhibitors?
Reverse-transcriptase inhibitors yog ib chav kawm ntawm cov tshuaj tiv thaiv kab mob uas siv los kho tus kab mob HIV lossis AIDS, thiab qee kis kab mob siab B. RTIs inhibit kev ua haujlwm ntawm rov qab transcriptase, tus kab mob DNA polymerase uas xav tau rau kev rov ua dua ntawm HIV thiab lwm yam.
