Folded TPTK on flop?

I'm still kinda unsure about this hand. Should I call down here? Thoughts?

Reads
MP3 is TAG 14/9/2.5 after 300 hands

MP2 is 20/6/1.5 after 90 hands, so it's possible he's also TAG

Both MP1 and BB are overly loose, MP1 is semi-aggressive, BB is passive


Party Poker 5.00/10.00 Hold'em <font color="#0000FF">(10 handed)</font> link

Preflop: Hero is UTG with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Hero raises</font>, <font color="#666666">1 folds</font>, MP1 calls, MP2 calls, MP3 calls, <font color="#666666">3 folds</font>, BB calls.

Flop: (10.40 SB) Q[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, MP1 calls, <font color="#CC3333">MP2 raises</font>, <font color="#CC3333">MP3 3-bets</font>, BB folds, Hero folds