Yes, Christian - that has happened to me. I found it by using the
Validation Density fit., and noticing that a residue number which was not
meant to exist had a Density fit bar.   As you say there was a stray atom
with that ID - totally incorrect - in the coordinate file..

Eleanor

On Wed, 10 Apr 2019 at 19:41, Christian Roth <christianroth...@gmail.com>
wrote:

> Well I think I recall one instance where it worked for me the way you
> describe. I think there was either a stray residue atom somewhere or a
> numbering not quite right. Could it be that this happens for you after
> autobuilding?
>
> Cheers
>
> On Wed, Apr 10, 2019 at 7:11 PM Hillen, Hauke <hauke.hil...@mpibpc.mpg.de>
> wrote:
>
>> Dear all,
>>
>> Thank you for your many suggestions!
>> Indeed, I was not able to fix the issue to my satisfaction. As Paul
>> suspected, set_add_terminal_residue_do_post_refine was already set to 0.
>> The triple-refine also did not improve anything. I also checked for the TER
>> records, which I also suspected first, but there are none in my PDB file.
>>
>> The workaround solution was to delete a larger number of residues and
>> eventually start adding from the opposite end of the chain I was adding
>> previously. For some reason, this worked in multiple instances. However, it
>> was a trial-and-error of how many residues I had to first remove and then
>> re-add to make it work.
>>
>> I am still puzzled by this - please let me know if anybody ever gets to
>> the root of this.
>>
>> Kind regards,
>> Hauke
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