$16: Big stack battle with AK

[Emperor Norton]

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero (t5595)
SB (t3490)
BB (t1530)
UTG (t1810)
MP (t1075)

Preflop: Hero is Button with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t450</font>, <font color="#CC3333">SB raises to t3565</font>, <font color="#666666">1 fold</font>, Hero?

Villain is a profitable regular, though I've seen him doing a few weird things. I hadn't yet been abusing my big stack, so it seems like he's probably on a pretty tight range to come over the top at me. Call or fold?