The process by which a denatured protein regains its native three-dimensional structure and biological activity when favorable conditions are restored. Not all proteins can successfully renature after denaturation.
From Latin 're-' (again) and 'natura' (nature), meaning 'return to natural state.' The concept became important in the 1960s with Anfinsen's experiments showing that some proteins could spontaneously refold after denaturation.
Renaturation is like having a crumpled piece of origami magically fold itself back into a perfect crane! Only certain proteins have this superpower - many others are like Humpty Dumpty and can't be put back together again once unfolded.
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