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"Junk" Proteins May Fuel Adaptation (nautil.us)
3 points by marojejian 4 months ago | hide | past | favorite | 4 comments


Interesting article. I hadn't really heard of the term "disordered protein"

Though reading the linked paper[1] gave me a more concise definition:

>Intrinsically disordered or unstructured proteins (IDPs) exist as highly flexible polypeptide chains in vivo behaving as an ensemble of conformational states with no stable tertiary structure

To me this suggests "disordered" is as poor a name as "junk" was for DNA. Rather these are just proteins that don't have a fixed tertiary structure.

And that changing shapes doesn't need to reflect "disorder", rather it sounds like it more likely allows the proteins to function in more complex, dynamics ways. So something like "dynamic" might be a better term to me.

Typical case of humans labeling something they don't understand easily as worthless.

[1]https://academic.oup.com/nar/article/41/D1/D508/1069637


disordered as in not having order, rather than abnormal.


Yes, "not having order" was the definition I was using. And that definition implies "high entropy" where the many micro-states each are equivalent in function.

But it sounds like the evidence suggests the opposite: the many conformations we see these proteins taking in different contexts serve a function. The proteins are more like machines with moving parts, vs. static legos.


Intrinsically disordered proteins

https://en.wikipedia.org/wiki/Intrinsically_disordered_prote...

Also worth consideration while pondering this class of protien:

Biomolecular condensate

https://en.wikipedia.org/wiki/Biomolecular_condensate

Heat shock protein

https://en.wikipedia.org/wiki/Heat_shock_protein




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