Re: [AMBER] Error while setting up constant pH MD simulations

From: Jason Swails <>
Date: Fri, 26 Feb 2021 08:44:50 -0500

What version of AmberTools are you using? This error is likely a result of
some kind of version mismatch with ParmEd and AmberTools, but without
knowing more I have no way of debugging.

All the best,

On Sat, Feb 13, 2021 at 9:56 AM Yashraj Kulkarni <> wrote:

> Hello,
> I am trying to follow the Constant pH MD simulation tutorial as posted on
> the AMBER website, and run it on my enzyme system. However, when I run the
> code to get the .cpin output file, I get the following error:
> AttributeError: ’TitratableResidue’ object has no attribute ’typ’
> I tried my best to troubleshoot, but I am not able to understand what’s
> causing the problem. Could any of you please help me with this?
> Thanks,
> Yash_______________________________________________
> AMBER mailing list

Jason M. Swails
AMBER mailing list
Received on Fri Feb 26 2021 - 06:00:04 PST
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