There is a button for doing this - add OXT, which if I recall is hidden in the "other modelling tools" menu.
Tony.
Sent from my iPhone
On 17 Feb 2012, at 10:26, "Hubing Lou" <[log in to unmask]> wrote:
> Dear all,
>
> I have a structure solved by molecular replacement. The C-terminus at
> the end of the chain shows as CO, not COOH. How do I make it into COOH
> in COOT? I tried to place an O in the relevant position, but seems not
> working this way.
>
> Thanks,
>
> Hubing
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