$1 MTT Pokestars AK facing reraise all in Mid tourn

[Turlock]

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (9 handed)
Hero (t3520)
CO (t6850)
Button (t3158)


SB (t3640)
BB (t4595)
UTG (t1860)
UTG+1 (t3210)
MP1 (t11005)
MP2 (t2955)

Preflop: Hero is MP3 with A[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img].
UTG calls t150, <font color="#666666">1 fold</font>, MP1 calls t150, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t750</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">SB raises to t3640</font>, <font color="#666666">1 fold</font>, UTG folds, MP1 folds, Hero ???

Average stack at the start of the hand is $4500,and this is a new table with no reads.