KK raised on the flop

[martins]

nl2000 five handed, hero is UTG bets $80 with K [img]/images/graemlins/diamond.gif[/img] K [img]/images/graemlins/spade.gif[/img], only button calls.

flop: 4 [img]/images/graemlins/diamond.gif[/img] 7 [img]/images/graemlins/heart.gif[/img] 2 [img]/images/graemlins/club.gif[/img]

hero bets $135, button raises to $380, hero calls

turn: J [img]/images/graemlins/heart.gif[/img]

hero checks, button bets $1000, hero?

no reads, full stacks.