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发表于 2015-1-26 15:12:48
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您好,我对蛋白质-配体结构做了两步能量优化,然后进行加热、平衡,最后做MD。平衡之后配体还没有跑出蛋白质。下面是参数文件,您帮忙看一下。谢谢!!!
min1
&cntrl
imin=1,
maxcyc=3000,
ncyc=1000,
cut=8.0,
ntb=1,
ntr=1
/
Hold the protein fixed
500.0
RES 1 172
END
END
min2
&cntrl
imin=1,
maxcyc=3000,
ncyc=1000,
cut=8.0,
ntb=1,
ntr=0
/
heating
&cntrl
imin=0,
irest=0,
ntx=1,
ntb=1,
cut=8.0,
ntr=1,
ntc=2,
ntf=2,
tempi=0.0,
temp0=300.0,
ntt=3,
gamma_ln=2.0,
nstlim=30000,dt=0.002,
ntpr=100,ntwx=500,ntwr=1000
/
Keep protein fixed with weak restraints
10.0
RES 1 172
END
END
equil
&cntrl
imin=0,irest=1,ntx=5,
ntb=2,pres0=1.0,ntp=1,
taup=2.0,
cut=8.0,ntr=0,
ntc=2,ntf=2,
tempi=300.0,temp0=300.0,
ntt=3,gamma_ln=2.0,
nstlim=25000,dt=0.002,
ntpr=100,ntwx=500,ntwr=1000
/
md
&cntrl
imin=0,irest=1,ntx=5,
ntb=2,pres0=1.0,ntp=1,
taup=2.0,
cut=8.0,ntr=0,
ntc=2,ntf=2,
tempi=300.0,temp0=300.0,
ntt=3,gamma_ln=1.0,
nstlim=2000000,dt=0.002,
ntpr=100,ntwx=500,ntwr=1000
/
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