Qhov Tseem Ceeb - Prions vs Viroids
Cov kab mob sib kis ua rau cov kab mob hauv cov nroj tsuag, tsiaj txhu, thiab lwm yam kab mob. Muaj ntau hom kab mob sib txawv xws li kab mob, fungi, protozoans, kab mob, viroids, prions, thiab lwm yam. Viroids thiab prions yog cov kab mob me me uas coj zoo li cov kab mob. Txawm li cas los xij, ob qho tib si yog qhov sib txawv ntawm cov kab mob sib kis. Cov kab mob muaj ob qhov loj: cov khoom siv caj ces thiab cov protein capsid. Viroids thiab prions muaj cov khoom siv caj ces lossis cov protein capsid. Viroids tuaj yeem txhais tau tias yog me me thiab liab qab kis kab mob RNA molecules uas ua rau muaj kab mob hauv cov nroj tsuag siab dua. Prions tuaj yeem txhais tau tias yog cov proteinaceous me me uas ua rau muaj kab mob hauv cov tsiaj nrog rau tib neeg. Qhov sib txawv tseem ceeb ntawm prions thiab viroids yog tias prions tsis muaj nucleic acids thaum viroids tsis muaj proteins.
Prions yog dab tsi?
A prion yog ib qho kab mob kis tau los ntawm cov amino acid chains. Lawv tsis muaj nucleic acids xws li DNA lossis RNA. Feem ntau prions me dua li viroids. Prions kis rau tsiaj, ua rau cov kab mob neurological degenerative xws li kab mob nyuj vwm (bovine spongiform encephalopathy) hauv nyuj, kab mob scrapie hauv yaj thiab tshis, kuru thiab gerstmann-strausler-sheinker kab mob hauv tib neeg, kab mob creutzfeldt-jakob, thiab lwm yam. Kuru thiab nyuj vwm. Cov kab mob muaj ntau heev thiab lawv cov tsos mob suav nrog kev poob ntawm kev tswj lub cev muaj zog thiab kev coj cwj pwm txawv txawv. Cov kab mob Prion tuaj yeem tshwm sim nyob rau hauv peb txoj kev sib txawv muaj npe, tau txais, tsev neeg thiab tsis sib xws. Txawm li cas los xij, thawj txoj hauv kev ntawm prion kab mob hauv cov tsiaj yog los ntawm kev noj.
Daim duab 01: Prion Structure
Prions muaj lub sijhawm incubation ntev heev hauv cov tswv. Txij li thaum prions yog cov proteins, lawv tuaj yeem zom tau los ntawm proteinase K thiab trypsin. Txawm li cas los xij, prions tiv taus ribonucleases. Lawv kuj muaj peev xwm tiv taus cua sov, tshuaj tua kab mob, thiab irradiation. Prions muaj peev xwm ua rau nws tus kheej rov ua dua. Txawm li cas los xij, lawv tsis suav tias yog kab mob. Lawv ua pab pawg sib kis.
Vim yog dab tsi?
Ib tug viroid yog ib qho kab mob RNA uas tsim los ntawm ib leeg-stranded ncig RNA. Viroids tau pom thawj zaug thiab muaj npe los ntawm cov nroj tsuag pathologist Theodor O. Diener hauv xyoo 1971. Thawj cov kab mob uas tau txheeb xyuas yog Potato Spindle Tuber Viroid (PsTVd) thiab peb caug-peb hom viroids tau txheeb xyuas txog tam sim no. Viroids tsis muaj protein capsid lossis ib lub hnab ntawv. Lawv tsuas yog tsim los ntawm RNA molecules xwb. Txij li cov viroids yog RNA hais, lawv tuaj yeem zom tau los ntawm ribonucleases. Tab sis tsis zoo li prions, viroids tsis tuaj yeem rhuav tshem los ntawm proteinase K thiab trypsin. Qhov loj ntawm tus kab mob viroid yog me dua li cov kab mob sib kis. Viorids xav tau ib lub xov tooj ntawm tes rau kev tsim tawm. Lwm yam tshaj li ib leeg RNA molecule, lawv tsis synthesize proteins.
Daim duab 02: Cov qauv ntawm Pospiviroid
Viroids tsis ua rau tib neeg mob. Lawv kis tau cov nroj tsuag siab dua thiab ua rau cov kab mob xws li qos spindle tuber kab mob, thiab kab mob chrysanthemum stunt. Cov kab mob RNA no yog lub luag haujlwm rau kev ua qoob loo tsis ua haujlwm thiab tom qab ntawd, kev poob ntau lab nyiaj hauv kev ua liaj ua teb txhua xyoo. Qos yaj ywm, dib, txiv lws suav, chrysanthemums, avocado thiab txiv maj phaub xibtes yog cov nroj tsuag uas feem ntau raug rau cov kab mob viroid. Viroid kab mob kis tau los ntawm kev sib kis kab mob tom qab los ntawm kev puas tsuaj rau cov nroj tsuag. Qee tus kab mob viroid kis tau los ntawm aphids thiab nplooj mus rau nplooj nplooj.
Dab tsi yog qhov zoo sib xws ntawm Priions thiab Viroids?
- Prions thiab viroids yog cov kab mob.
- Ob hom tsis muaj ib qho ntawm ob lub ntsiab lus tseem ceeb (protein tsho tiv no thiab nucleic acids) ntawm cov kab mob.
- Ob qhov hais me me dua cov kab mob.
Qhov txawv ntawm Prions thiab Viroids yog dab tsi?
Prions vs Viroids |
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| Prions yog cov kab mob sib kis. | Viroids yog me me thiab liab qab kis kab mob RNA molecules. |
| Discovery | |
| Prions tau pom los ntawm Stanley B. Prusiner. | Viroids tau muaj npe los ntawm T. O. Diener xyoo 1971. |
| khoom siv noob neej | |
| Prions tsis muaj DNA lossis RNA. | Viroids muaj RNA. |
| Kev zom zaub mov los ntawm Proteinase K thiab Trypsin | |
| Prions tuaj yeem zom tau los ntawm proteinase K thiab trypsin. | Viroids tsis tuaj yeem zom tau los ntawm proteinase K thiab trypsin. |
| YDigestion los ntawm Ribonucleases | |
| Prions tiv taus ribonucleases. | Viroids tuaj yeem zom tau los ntawm ribonucleases. |
| Kab mob | |
| Prions kis tsiaj. | Viroids kis cov nroj tsuag siab dua. |
| Kab Mob Sib Kis | |
| Prions ua rau kab mob xws li kab mob nyuj vwm hauv nyuj, kab mob scrapie hauv yaj thiab tshis, thiab lwm yam. | Viroids ua rau kab mob xws li qos spindle tuber kab mob, chrysanthemum stunt kab mob. |
| Reproduction | |
| Prions tuaj yeem nthuav tawm tus kheej. | Viroids tuaj yeem tsim tawm tsuas yog hauv ib lub xov tooj ntawm tes. |
| Size | |
| Prions me dua viroids. | Viroids me dua cov kab mob. |
Summary – Prions vs Viroids
Prions thiab viroids yog cov kab mob sib kis uas ua rau muaj kab mob hauv cov tsiaj thiab nroj tsuag, raws li. Prions yog cov kab mob me me uas ua rau muaj kab mob hauv cov tsiaj. Prions tsis muaj nucleic acids. Viroids yog cov nroj tsuag kab mob uas muaj tsuas yog ib qho stranded ncig RNA molecule. Viroids tsis encode lossis muaj cov proteins. Qhov no yog qhov txawv ntawm prions thiab viroids.
Download PDF Version of Prions vs Viroids
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li cov ntawv sau tseg. Thov download PDF version ntawm no Qhov txawv Ntawm Priions thiab Viroids.
