AKo Post Flop at $50+5

[burgi]

Hi,
would you play this hand any different and if yes, how?

***** Hand History for Game 2510903753 *****
30/60 Tourney Texas Hold'em Game Table (NL) (Tournament 14714158) - Wed Aug 10 12:19:41 EDT 2005
Table Table 11776 (Real Money) -- Seat 3 is the button
Total number of players : 9
Seat 1: xxx(750)
Seat 2: Hero(2105)
Seat 3: xxx(440)
Seat 4: xxx(1225)
Seat 5: Villain(925)
Seat 7: xxx(490)
Seat 8: xxx(2230)
Seat 9: xxx(860)
Seat 10: xxx(975)
xxx posts small blind (15)
Villain posts big blind (30)
** Dealing down cards **
Dealt to Hero [ As, Kd ]
xxx folds.
xxx folds.
xxx folds.
xxx calls (30)
xxx calls (30)
Hero raises (150) to 150
xxx folds.
xxx folds.
Villain calls (120)
xxx folds.
xxx folds.
** Dealing Flop ** : [ 5s, 9d, Ah ]
Villain checks.
Hero bets (175)
Villain calls (175)
** Dealing Turn ** : [ 5c ]
Villain checks.
Hero bets (450)
Villain raises (600) to 600
Villain is all-In.
Hero calls (150)
** Dealing River ** : [ 6h ]

Is this standard? Should I ever fold this hand with a flop like that and the turn pairing the board with a low card?