Ed Pozharski wrote:
> On Fri, 2010-02-19 at 10:34 +0000, Paul Emsley wrote:
>
>> Perhaps I misunderstood the question then. I took it to mean: "what
>> are
>> the phi and psi value of the residue that I click on?". Those
>> values
>> are, as you say, represented on a Ramachandran plot with a green
>> block.
>> In due course the values will be added to the residue info dialog.
>>
>> Paul.
>>
>>
>
> It is rather esoteric situation, but sometimes indeed it would be nice
> just to get numbers. For instance, when one is comparing two
> structures, there is this mysterious requirement to say "(phi,psi)
> angles of the G49 change by +22 and -31 degree upon DNA binding..." or
> something like that.
I see.
> I am afraid reviewers won't like if I say "the green block shifted a little" :)
>
:)
> There are, of course, many other programs that will calculate backbone
> torsions. One trick I can think of with Coot is "torsion general"...
> Hmm, I just tried it and it fails to initiate torsion for backbone
> dihedrals - is that because they are branched? Doesn't report any
> error, just does nothing.
>
Yes. Torsion general will only allow the manipulation of one residue -
several people have asked to be able to "wag the dog" (as it were).
But that is a manipulation tool, if you simply want to measure phi and
psi, you can do so using the Measures -> Distances and Angles -> Torsion
tool
> Oh, there you go: bring up the Ramachandran map, click on the residue
> you are interested in and coot will print the phi/psi for it in the
> terminal window.
Oh yes, so it does. I forgot about that :-)
> With crowded Ramachandran map you may have hard time
> hitting the target though. Could we add "Ramachandran map zooming" to
> the wish list?
>
>
The "+" key?
Paul.
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