Follows us back into the superstructure (7)
I believe the answer is:
pursues
'follows' is the definition.
(pursuing is a kind of following)
'us back into the superstructure' is the wordplay.
'back' is a reversal indicator.
'into' is an insertion indicator.
'the superstructure' becomes 'pures' (I can't explain this - if you can you should give a lot more credence to this answer).
'us' back-to-front is 'su'.
'su' going within 'pures' is 'PURSUES'.
Can you help me to learn more?
(Another definition for pursues that I've seen is " Chases".)