Minimization with restrains
 &cntrl
 nstlim=250000, dt=0.002, ntx=5, irest=1, ntpr=1000, ntwr=1000,ntwx=1000,
 tempi=298.15, temp0=298.15, ntt=1, tautp=2.0,
 ntb=2, ntp=1,
 ntc=2, ntf=2,
 nrespa=1,
 cut = 10.0, 
 ntr=0,
 ibelly=1,
 &end
 &ewald 
 &end
Hold the side chain frozen
RES 611
RES 613
RES 614 645
RES 647 22480 
FIND
* * S *
* * B *
* * 3 *
* * E * 
SEARCH
SEARCH
RES 1   610
END
END