25nl AKs facing PF 4bet against 29/7

[syn]

Whats usually my move here
no history really that i can remember of, first pot with him
PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($35.15)
SB ($28.50)
Hero ($37.10)
UTG ($9.50)
MP ($34.25)
CO ($25)

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $1</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to $3.5</font>, <font color="#CC3333">MP raises to $12.25</font>, Hero folds.

Final Pot: $7.10

[digit]

I've not seen many 4 bets at 25NL with anything other than kings or aces. I'd fold.

[Bill Smith]

How many hands? Datamined?

[jjb108]

Looks good to me with over 100bb stacks. This is usually KK+.
What do you think the 4-bet range is at 25NL?

Your equity against KK+ is ~25%
Add in AK and AKs and its ~40%
Make it JJ+, AK+ its about 43%