Crossword Genius

The natural breaking down of proteins? (3)

Ross

I believe the answer is:

rot

I'm a little stuck... Click here to teach me more about this clue!

'the natural breaking down' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

'of proteins?' is the wordplay.
'of' indicates a hidden word.
'ROT' can be found hidden inside 'proteins'.

Can you help me to learn more?

(Other definitions for rot that I've seen before include "crumble" , "Cobblers" , "Rhubarb" , "Deterioration" , "Codswallop" .)

I've seen this clue in the Evening Standard.
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