HELP: need a program to build a protein backbone from phi psi angles

Andrew Martin martin at bsm.bioc.ucl.ac.uk
Fri Oct 21 04:04:08 EST 1994


Gerard Kleijwegt (gerard at rigel.bmc.uu.se) wrote:
: In article <37tvvd$hfk at usenet.INS.CWRU.Edu>, hoa at cwxtl (Hoa Ton-That) writes:
: |> Hello,
: |>         I'm trying to incorperate a subroutine into one of my programs that willbuild a protein from the torsion angles.  I've looked at the article by
: |> Jan Hermans in Methods in ENZOMOLOGY 115 pg 171.  But the algorithm seems
: |> to give me an incorrect model (ie if i input -180,-180 phi and psi angles
: |> i get 180,180 build backbone).  If anyone knows of any freely availible
: |> programs (with source) for doing such a thing could I love to hear about
: |> them.  Or any other good papers on the subject would most likely help.
: |> 
: |> Thanks in advance,
: |> Hoa Ton-That
: |> hoa at cwxtl.bioc.cwru.edu
: |> hoa at xtal.ri.ccf.org
: |> 

: errr ...  -180 = 180 modulo 360

: --gerard

I have a program which will do what you want, but as Gerard points out, +180 == -180

Andrew
--
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Dr. Andrew C.R. Martin,         University College London & SciTech Software
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