Journalist provided formality and structure (7)
I believe the answer is:
edifice
'structure' is the definition.
(edifice is a kind of structure)
'journalist provided formality' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'provided' becomes 'if' (eg 'provided it's sunny' means 'if it's sunny').
'formality' becomes 'ice' (I've seen this before).
'ed'+'if'+'ice'='EDIFICE'
'and' acts as a link.
(Other definitions for edifice that I've seen before include "Construction" , "erection" , "Grand building" , "'Large, imposing building (7)'" , "Fine building" .)