NL100: Can i fold Kings here?

[erazorXP]

BB is TAG, 13/10/5
Hero is at 13/9/4


PokerStars No-Limit Hold'em, $1.00 BB (8 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($127.60)
<font color="#CC3333">Hero ($101)</font>
<font color="#CC3333">MP1 ($20)</font>
MP2 ($108.50)
CO ($70.40)
Button ($115.50)
SB ($32.15)
<font color="#CC3333">BB ($109.15)</font>

Preflop: Hero is UTG+1 with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $4</font>, <font color="#CC3333">MP1 raises to $10</font>, <font color="#666666">4 folds</font>, <font color="#CC3333">BB raises to $23.5</font>, Hero calls $20, MP1 calls $10 (All-In).

Flop: ($68) J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players, 1 all-in)</font>
<font color="#CC3333">BB bets $30</font>, Hero??

The PF 4-bet OOP indicated Aces, but i´m not sure.. would it be profitable to shove PF after this action?