did you ever resolve this? I'm just seeing the email now, sorry for the
delay.
please let us know the Amber version, and paste your leap input into the
email body.
On Fri, May 23, 2025 at 2:17 PM Nematipour, Adel (drf5jn) via AMBER <
amber.ambermd.org> wrote:
> Hi,
> I'm trying to model a modified residue using the FF14SB force field, but
> when I run tleap, I get the following error:
> "Could not find angle parameter for atom types: CT – C – CX."
> I'm now trying to find an appropriate angle parameter for these atoms, but
> I couldn't locate it in either parm10.dat or GAFF. I came across a paper
> suggesting that if the angle parameter for A–B–C is missing, one possible
> approach is to estimate it by averaging the parameters for A–B–A and C–B–C.
> However, in my case, I couldn’t find the angle parameter for CX–C–CX,
> although CT–C–CT is available.
> What would be the best strategy in this case? I would appreciate any
> suggestions or guidance.
> Thank you!
>
> Adel N
>
>
>
>
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Received on Fri Oct 10 2025 - 09:00:02 PDT
