Very basic AK

[Isura]

No reads except that villain was 19/5 in small sample. I sometimes like to call in this spot to under-rep my hand and get more action postflop, but off course 3-betting is fine too. I didn't raise flop because I figure he has 4 or less outs if behind, and he folds his bluffs or w/e if I raise. He bet the turn pretty quick. How do you interpret this bet? If I call there will be 415 in the pot with 250 behind. Can I fold even for that price on the river? Note it is full ring.

Poker Stars - No Limit Hold'em Cash Game - $2/$4 Blinds - 9 Players - (LegoPoker HH Converter)

SB: $402.00
BB: $436.40
UTG: $103.05
UTG+1: $276.15
MP1: $773.20
MP2: $441.70
MP3: $403.50
Hero (CO): $400.00
BTN: $883.75

Preflop: Hero is dealt A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/diamond.gif[/img] (9 Players)
UTG folds, UTG+1 calls $4.00, MP1 calls $4.00, <font color="red">MP2 raises to $16.00</font>, MP3 folds, Hero calls $16.00, 3 folds, UTG+1 calls $12.00, MP1 calls $12.00

Flop: ($70) J[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/spade.gif[/img] (4 Players)
UTG+1 checks, MP1 checks, <font color="red">MP2 bets $36.00</font>, Hero calls $36.00, 2 folds

Turn: ($142) 2[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">MP2 bets $136.00</font>, Hero