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Trouble to draw protein helix

  1. Jul 24, 2008 #1
    hello everbody!!!

    I need help

    I usage this formula to draw helix


    But I need draw helix in this format with twists and curves along the route

    http://www.postyourimage.com/view_image.php?img_id=92mJqL2pHvURq321216910960 [Broken]

    This helix have control poinst (Alpha carbon)

    how should I proceed?

    Thank you for your attention
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Jul 29, 2008 #2
    Hello. The attachment contains a sketch of how to proceed. The equations have not yet been checked numerically, so use with caution.

    Attached Files:

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