Crossword Genius

Life's fashionable for an enzyme (6)

Ross

I believe the answer is:

pepsin

'for an enzyme' is the definition.
(pepsin is a kind of enzyme)

'life's fashionable' is the wordplay.
'life's' becomes 'pep's' (pep is a kind of life).
'fashionable' becomes 'in' (in can mean fashionable or trendy).
'peps'+'in'='PEPSIN'

(Another definition for pepsin that I've seen is " enzyme".)

I've seen this clue in The Daily Express.
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