Cov txheej txheem:
- PCNA kev ua haujlwm yog dab tsi?
- PCNA thawj zaug pom qhov twg?
- PCNA loj npaum li cas?
- Lub luag haujlwm ntawm PCNA yog dab tsi hauv eukaryotic replication?
Video: Puas yog proliferating cell nuclear antigen?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
PCNA (proliferating cell nuclear antigen) tau pom nyob rau hauv cov nuclei ntawm cov poov xab, cov nroj tsuag thiab cov tsiaj hlwb uas dhau los ntawm cell division, qhia txog kev ua haujlwm hauv cell voj voog tswj thiab / lossis DNA replication. Tom qab ntawd nws tau pom meej tias PCNA kuj tau ua lub luag haujlwm hauv lwm cov txheej txheem cuam tshuam nrog cov genome ntawm tes.
PCNA kev ua haujlwm yog dab tsi?
Proliferating cell nuclear antigen (PCNA) plays lub luag haujlwm tseem ceeb hauv nucleic acid metabolism ua ib feem ntawm kev rov ua dua thiab kho tshuab. Qhov no toroidal-zoo li tus protein encircles DNA thiab muaj peev xwm swb ob-directionally raws duplex.
PCNA thawj zaug pom qhov twg?
Miyachi et al. (1978) thawj zaug txheeb xyuas qhov auto-antigen hauv cov neeg mob uas muaj kab mob lupus erythematosis, uas lawv hu ua PCNA vim tias cov protein tau pom nyob rau hauv lub nucleus ntawm kev faib hlwb.
PCNA loj npaum li cas?
Proliferating cell nuclear antigen (PCNA), ib qho protein ntawm 30 kDa qhov hnyav molecular kuj hu ua cyclin, tsim lub nplhaib trimer nyob ib ncig ntawm DNA ob-helix. Nws khi rau ntau yam ntawm lwm cov proteins nuclear thiab yog li npaj cov txheej txheem biochemical ntawm DNA replication diav rawg.
Lub luag haujlwm ntawm PCNA yog dab tsi hauv eukaryotic replication?
Proliferating cell nuclear antigen (PCNA) plays lub luag haujlwm tseem ceeb hauv ntau yam ntawm DNA replication thiab replication-associated txheej txheem, suav nrog translesion synthesis, yuam kev tsis muaj kev puas tsuaj bypass, tawg-induced replication, kho tsis sib haum, thiab chromatin sib dhos.
Pom zoo:
Puas yog ependymal cell yog glial cell?
Ependymal hlwb feem ntau hu ua hom cell hauv kab hauv lub hlwb ventricles hlwb ventricles Cerebral ventricles yog plaub kab noj hniav sib txuas ntawm lub hlwb kab los ntawm cov hlwb ependymal thiab ntim los ntawm cov kua dej cerebrospinal, cov kua ntshiab, tsis muaj xim uas tseem nyob ib puag ncig lub hlwb, qaum qaum, thiab cauda equina.
Thaum galvanic cell ua electrolytic cell?
Raws li cov galvanic hlwb yog spontaneous lawv yuav tsum tau lub zog kom tau hloov mus rau hauv electrolytic cell. Ntxiv mus lub anode thiab cathode ntawm galvanic cell yoghloov thiab cov tshuaj tiv thaiv yog hu ua rov qab ua kom cov galvanic cell tau hloov mus rau hauv electrolytic cell .
Puas yog lub zog nuclear tsis zoo rau ib puag ncig?
Nuclear zog tsim radioactive pov tseg Ib qho kev txhawj xeeb tseem ceeb ntawm lub zog nuclear yog tsim cov khoom siv hluav taws xob xws li uranium zeb tailings, siv (siv) reactor roj, thiab lwm yam xov tooj cua. khib. Cov ntaub ntawv no tuaj yeem nyob hauv xov tooj cua thiab txaus ntshai rau tib neeg noj qab haus huv rau ntau txhiab xyoo .
Puas yog tus nqi hluav taws xob nuclear nce qis hauv pab pawg?
Ntawm ib lub sijhawm, kev siv hluav taws xob muaj txiaj ntsig zoo nce ntxiv vim kev tiv thaiv hluav taws xob tseem nyob tas li. … down ib pab pawg, tus naj npawb ntawm cov qib zog (n) nce thiab qhov kev ncua deb yog ntau dua ntawm cov nucleus thiab cov hluav taws xob siab tshaj plaws .
Puas yog langerhans cells antigen nthuav tawm cov hlwb?
Langerhans hlwb yog cov pob txha pob txha- muab tau, antigen-processing thiab -presenting cells pom feem ntau nyob rau hauv suprabasal epidermal txheej. Txawm li cas los xij, lawv tsis yog tshwj xeeb rau cov epidermis thiab pom muaj nyob rau hauv lwm cov squamous epithelia thiab nyob rau hauv ib txwm dermis .
