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this post was submitted on 13 Dec 2024
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Jumping in down here. I agree with you entirely that racemic mixes are a very different ball than mirror organisms; it's been a known thing for a long time, and while I'm not positive, I'd be very surprised if FDA testing didn't include different chiralities of both the original compound and metabolite.
That being said, there's nothing to say one version of a chiral protein can't behave like a prion. I don't know of any evidence where we've seen it happen either, though. There's also potentially the issue of partial bonding. Not every domain on every protein is chiral. If a mirror protein has some domains that bind but other functional domains that are incompatible, you could see it incorporated into complex that either 1) are now non-functional or 2) have alternate folding that behaves similar to prions.
Again though, I can't point to any evidence of that. You can do the arrow pushing that shows how you get tetrodoxin from the stuff in your tea or coffee, it doesn't mean it's actually going to happen beyond the statistical realm interesting only to quantum physicists.
Just chiming in because your comments are level headed and you've clearly got some knowledge in the area and appreciate the discussion. Looking forward to digging into the report this weekend, I had no idea this was even something are even attempting!