$15+$1 Turbo - I Can't Fold, Can I?

[-Skeme-]

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PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (5 handed)

Button (t1370)
SB (t1210)
Hero (t1305)
UTG (t4800)
MP (t4815)

Preflop: Hero is BB with 2[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/spade.gif[/img].
UTG calls t100, <font color="#666666">1 fold</font>, Button calls t100, <font color="#666666">1 fold</font>, Hero checks.

Flop: (t350) 3[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets t200</font>, <font color="#CC3333">UTG raises to t600</font>, Button folds, Hero calls t400.

Turn: (t1550) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets t700</font>, Hero ??
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I'm getting over 3.7:1 on my call, and I figure him to only have a Jack, but not AJ, so my Aces are still live. Against the range I've put him on, I'm about a 2.3:1 underdog, so I have the current odds, and folding would leave me crippled, but still in the game.

Am I getting too much of an overlay to even think of folding? Also, what's a better line for this hand? Should I just be folding to this flop raise? If I think I can get his whole stack if I hit the turn, should I be calling? Or am I too short to even be considering this?

Thanks a lot.