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Prioni in proteinsko dedovanje pri kvasovkah Martina Lenarčič Adrijana Oblak
Kaj so prioni? ,[object Object],[object Object],[object Object],[object Object]
PrPC in PrPSc
Creutzfeldt – Jakobova bolezen (CJB) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Variantna   Creutzfeldt – Jakobova bolezen (vCJB)   ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Primerjava Zdravi človeški možgani CJB vCJB
Spongiformna encefalopatija pri govedu (BSE) ali bolezen norih krav ,[object Object],[object Object],- prenosljiva smrtna možganska bolezen
Praskavec (Scrapie) pri ovcah ,[object Object],[object Object],[object Object],[object Object]
Kuru ,[object Object],[object Object]
Mehanizem delovanja
Diagnostika bolezni ,[object Object],[object Object],[object Object]
Možni načini zdravljenja ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Prednost preučevanja pri kvasovkah ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object]
[ URE3 ] ,[object Object],[object Object],[object Object],[object Object]
[ PSI+ ] ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Širjenje TSE - Prusiner šablonski model; model polarizacije z zasnovo
[object Object],[object Object],[object Object]
[object Object],esencialne za prionske lastnosti teh proteinov domene, ki formirajo prione (PrD)  na N terminalni polovici prionskega proteina (Ure2, Sup35) ali na C koncu (Rnq1).
[object Object],nastanejo različni in prenosljivi agregati Ure2 vsebuje PrD, ki je prenosljiv
QNR Sup35   ,[object Object],mutacijska zamenjava enega Glu/Asn   Sup35 se združi v agregate povečanje topnosti in funkcionalnosti Sup35 PNM (Psi no more), oblike Sup35 nastanek prionskih oblik
OPR Sup35   ,[object Object],[object Object],[object Object],[object Object],[object Object],5 kopij na N koncu PrP
 
Oligopeptidne ponovitve in razmnoževanje prionov   ,[object Object],[object Object]
Domena, ki formira prion Ure2   ,[object Object],[object Object],[object Object],[object Object]
Domena, ki formira prion Sup35
Konformacijske spremembe in PrD ,[object Object],PrD iz priona kvasovk so nujni za konverzijo priona
Konformacijska konverzija Sup35 ,[object Object],[object Object],[object Object],[object Object],[object Object]
'nukleacijska konformacijska konverzija' ,[object Object],[object Object]
Polarne zadrge ,[object Object],[object Object],[object Object]
Konformacijske spremembe in njena funkcija   ,[object Object],[object Object],ohranitev stopnje funkcije na končni stopnji translacije
Razmnoževanje različnih variant prionov   ,[object Object],[object Object],[object Object]
Celični faktorji in razmnoževanje prionov pri kvasovkah   ,[object Object],[object Object]
Hsp104  ,[object Object],[object Object],[object Object]
Hsp104 ,[object Object],[object Object]
Ali Hsp104 povzroči razpad agregatov?   povzroči razpad visoko molekularnih prionskih agregatov v manjše enote, ki nato delujejo kot ¨semena¨ (propagoni)
Kemijsko zmanjšanje izločanja prionov kvasovk ,[object Object],vodi k hitremu zmanjšanju vseh znanih prionov kvasovk
Model za pretvorbo in razmnoževanje prionov pri kvasovkah
Zaključek ,[object Object],[object Object],[object Object],[object Object],[object Object]
 

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Prioni in proteinsko dedovanje pri kvasovkah