this post was submitted on 05 Aug 2023
97 points (100.0% liked)
World News
22058 readers
72 users here now
Breaking news from around the world.
News that is American but has an international facet may also be posted here.
Guidelines for submissions:
- Where possible, post the original source of information.
- If there is a paywall, you can use alternative sources or provide an archive.today, 12ft.io, etc. link in the body.
- Do not editorialize titles. Preserve the original title when possible; edits for clarity are fine.
- Do not post ragebait or shock stories. These will be removed.
- Do not post tabloid or blogspam stories. These will be removed.
- Social media should be a source of last resort.
These guidelines will be enforced on a know-it-when-I-see-it basis.
For US News, see the US News community.
This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Yep feeding dead cows to cows is the main way that mad cow disease shows up (there is also sometimes atypical mad cow disease where it shows up randomly too)
Well, since MCD is caused by prions, which can occur spontaneously in any healthy animal, it makes sense.
Prions are an amazing thing, the Wikipedia has a whole rabbit hole about them.
They come from naturally occurring protein building blocks, which unlike most proteins, are "flexible", so they can flex into different shapes to join with multiple different proteins.
Well, it turns out sometimes they flex in an unusual way, matching proteins they weren't supposed to, forming a "prion" protein that causes more of the flexible ones join proteins they shouldn't, in a cascading effect.
There is no predicting when this could happen, and no way of preventing it since the flexible building blocks are essential for the normal functioning of many proteins. They just have a certain possibility of catastrophic failure, and that's it.
Yeah, they're really cool!