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What would happen if an extremely stable protein was created because of some error? Would that protein be tagged by ubiquitin?

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I haven't studied neuro yet, so take this with a huge pinch of salt, however I'm sure it's been mentioned that the prion that causes CJD is extremely stable (part of the problem), which may suggest in some cases no. –  Rory M Jul 1 '13 at 23:13

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