NL25: AK on drawy board how's my line here?

[whizzle]

Villian was 29.7/7.2/11.3 @ 50 hands or so. I really had a tough decision on the turn. He could have made his straight but he could also be drawing. I thought that calling was a bit weak so that's why i raised? bad line? opinions?

Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
6 players
Converter

Stack sizes:
UTG: $26.25
UTG+1: $24.67
Hero: $36.45
Button: $24.75
SB: $28.22
BB: $6.06

Pre-flop: (6 players) Hero is CO with A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img]
2 folds, <font color="#cc0000">Hero raises to $1</font>, Button calls, 2 folds.

Flop: T[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img] ($2.35, 2 players)
<font color="#cc0000">Hero bets $1.75</font>, Button calls.

Turn: Q[img]/images/graemlins/club.gif[/img] ($5.85, 2 players)
Hero checks, <font color="#cc0000">Button bets $0.75</font>, <font color="#cc0000">Hero raises to $5.5</font>, <font color="#cc0000">Button raises all-in $21.25</font>, Hero folds.