AKo misplayed?

PokerStars 20+2 No-Limit Hold'em SNG, Big Blind is t50 (7 handed) converter

CO (t1820)
Button (t1305)
SB (t2395)
BB (t1430)
UTG (t2935)
Villian (t2275)
Hero (t1340)

Preflop: Hero is MP2 with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
UTG calls t50, <font color="#CC3333"> Villian raises to t300</font>, Hero calls t300, <font color="#666666">4 folds</font>, UTG folds.

Flop: (t725) 3[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Villian checks, Hero checks.

Turn: (t725) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Villian bets t100</font>, <font color="#CC3333">Hero raises to t400</font>, <font color="#CC3333">Villian raises to t700</font>, Hero calls t300.

River: (t2125) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Villian checks, Hero checks.

Final Pot: t2125



I'm sure I misplayed this, but I don't know what the best approach would've been. Comments?