TPTK vs 48/11/4 on a wet board

[yellowbluebus]

I am not sure what to do on the turn. This board hits his range pretty hard.

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 5 Players
LeggoPoker.com - Hand History Converter

BTN: $50.75
SB: $30.65
Hero (BB): $78.80
UTG: $42.20
CO: $37.60

Pre-Flop: A[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] dealt to Hero (BB)
SB folds, <font color="red">Hero raises to $2</font>, UTG calls $2, 2 folds

Flop: ($4.75) T[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $3.50</font>, UTG calls $3.50

Turn: ($11.75) J[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">UTG bets $4</font>, Hero calls ??