[gmx-users] No K+ for ffG53a6 ?

[Terry]

Hi all,

I am new to gmx. I want to use potassium ions in my system. But grompp gives
me only error. So I go through ffG53a6.atp, but find no atom type for
potassium.

Is this normal or I made some mistakes? If this is normal, how can I use
potassium ion with ffG53a6?

Thanks

Terry
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