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lusandanooo

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[求助] 蛋白的力场参数文件如何生成? 已有1人参与

最近在用VMD软件做分子动力学模拟,教程里给出了一个蛋白力场参数,但这个参数并不适用于我的蛋白,想知道有没有蛋白通用的力场参数文件?或者根据蛋白模型自动生成力场参数的文件?我看到VMD的fftk插件好像可以生成力场参数,有人会用这个插件能告知详细步骤吗?新手小白看不懂官方教程。
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lusandanooo

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2楼2016-11-10 14:53:06
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lusandanooo

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3楼2016-11-11 09:06:26
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lusandanooo

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4楼2016-11-11 10:14:26
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likun_2008

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gromacs里面有15种力场,可以通过命令处理一下,生成拓扑文件和gro文件

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5楼2016-11-11 15:20:19
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lusandanooo

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5楼: Originally posted by likun_2008 at 2016-11-11 15:20:19
gromacs里面有15种力场,可以通过命令处理一下,生成拓扑文件和gro文件

我已经找到了合适的力场参数,但运行namd时,出现如下报错,请问该如何修正?
运行NAMD做分子动力学模拟出现如下错误:
TCL: Running for 2500000 steps
ERROR: Constraint failure in RATTLE algorithm for atom 2684!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 2370!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 2244!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 1362!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 146!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 1246!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 625!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 1761!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 1796!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 68!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Constraint failure in RATTLE algorithm for atom 739!
ERROR: Constraint failure; simulation has become unstable.
ERROR: Exiting prematurely; see error messages above.
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6楼2016-11-11 15:47:38
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likun_2008

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7楼2016-11-11 16:47:45
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lusandanooo

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8楼2016-11-11 17:27:28
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likun_2008

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引用回帖:
8楼: Originally posted by lusandanooo at 2016-11-11 17:27:28
好的,谢谢,验证信息写什么呀...

就说是gromacs分子模拟就好了吧,不记得要验证

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9楼2016-11-12 00:14:10
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lusandanooo

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9楼: Originally posted by likun_2008 at 2016-11-12 00:14:10
就说是gromacs分子模拟就好了吧,不记得要验证
...

恩,已经加了,谢谢你
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10楼2016-11-14 09:56:45
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