Re: [ccp4bb] Angle between two different helices from two different subunits

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

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Subject: Re: Angle between two different helices from two different subunits
From: cedric bauvois cbauvois {- at -} GMAIL {- dot -} COM
Date: 2009-03-23

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From: Eleanor Dodson ccp4 {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2009-03-23

Subject: Re: Angle between two different helices from two different subunits
From: Charlie Bond Charles {- dot -} Bond {- at -} UWA {- dot -} EDU {- dot -} AU
Date: 2009-03-23

You don't necessarily need, or want, a program to do it.
The trick is to determine exactly which points in space you want to use.
If you can select a start and end point for each of your strands and
record their x,y and z, that gives you vectors you can apply some basic
vector geometry to, e.g. to calculate angles between them (based on
their dot product) and other things.

Cheers,
Charlie

cedric bauvois wrote:
> Hi all,
>
> is there a similar software for beta strands ?
>
> thanks
>
> 2009/3/23 Guenter Fritz
> >
>
> Hi Peter,
>
> you can do that with interhlx:
> http://nmr.uhnres.utoronto.ca/ikura/resources/data+sw/interhlx/
>
> There is also a way to determine the interhelical angle with molmol,
> http://hugin.ethz.ch/wuthrich/software/molmol/
> defining cylinders for the helices.
> HTH
> Guenter
>
> Hi all
>
> I would be interested to know about the programmes which can
> calculate the angle between the two helices. I want to
> calculate the angle between the two different helices from two
> different subunits of the structure. I know a non-supported
> programme at ccp4 called helixang. Is this programme can be
> helpful? Furthermore, i am not able to understand , how this
> program calculates the angle between the two helices of
> different subunits, after reading its logfile. I will appreciate
> suggesstions.
>
>
> Thanks in advance
>
> Peter
>
>
>
>
> --
> ..................................................................
> Dr. Cedric Bauvois
> Cristallographie des protéines
> Institut de Recherches Microbiologiques J.-M. Wiame -IRMW
> Campus CERIA - Av. E. Gryson, 1
> B-1070 Bruxelles, BELGIUM
> e-mail: Cedric.Bauvois@ulb.ac.be
> tél: +32 (0)2 5273634
> fax: +32 (0)2 5267273
> ..................................................................

--
Charlie Bond
Professorial Fellow
University of Western Australia
School of Biomedical, Biomolecular and Chemical Sciences
M310
35 Stirling Highway
Crawley WA 6009
Australia
Charles.Bond@uwa.edu.au
+61 8 6488 4406

CCP4bb navigation

CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999

Previous message:
Subject: Re: Angle between two different helices from two different subunits
From: cedric bauvois cbauvois {- at -} GMAIL {- dot -} COM
Date: 2009-03-23

Next message:
Subject: refmac not rerunnable
From: Eleanor Dodson ccp4 {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2009-03-23