KK deep stacks 5bet PF

[Diacon]

Du_me_may 22/13/3.06 4000 hands
but I very often reraise this guy on PF. Ussualy he folds or call... How I must play here ?

Party Poker - No Limit Hold'em Cash Game - $5/$10 Blinds - 6 Players - (LegoPoker Hand History Converter)

Hero (SB): $1,919.50
BB: $1,114.25
UTG: $4,515.29
MP: $1,095.00
CO: $666.55
BTN: $879.75

Preflop: Hero is dealt K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img] (6 Players)
<font color="red">UTG raises to $35.00</font>, MP folds, <font color="red">CO raises to $110.00</font>, BTN folds, <font color="red">Hero raises to $333.00</font>, BB folds, <font color="red">UTG raises to $999.00</font>, CO folds, Hero ???