Dear Amber users,
in course of DNA polyA-polyT decamer tutorial
when I tried to create prmtop and inpcrd files for Na+ solvated DNA by
saveamberparm dna1 polyAT_cio.prmtop polyAT_cio.inpcrd
the result was:
Checking Unit.
Building topology.
Building atom parameters.
For atom: .R<Na+ 21>.A<Na+ 1> Could not find vdW (or other) parameters for
type: Na+
.........................................
.................................and so on
Parameter file was not saved.
The forcefield was FF14SB.
How one can solve this problem?..
Kind regards,
Nick
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Received on Wed Apr 20 2016 - 01:30:05 PDT
