Benoit If you only have one instance of GDP in your model you have copy the GDP from the monomer library and use REEL to add a torsion that forces the C3' endo. If more that one you have to change the code and create a new restraint file. I'm happy to help if you send me the files. Cheers Nigel NB. Any files sent to me will be held in strictest confidence. On Thu, Feb 6, 2014 at 12:33 PM, Benoît Masquida wrote:

Hello everyone,

Does someone know how to define the sugar pucker in eLBOW? I am trying to force a C3' endo conformation for GDP.

Thanks for your help.

Benoit -- Benoît Masquida Chargé de Recherche CNRS GMGM, UMR 7156 GMGM tel: +33 3 68 85 14 81 fax: +33 3 68 85 13 65 IPCB, 21, rue René Descartes 67084 Strasbourg b.masquida@unistra.fr

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-- Nigel W. Moriarty Building 64R0246B, Physical Biosciences Division Lawrence Berkeley National Laboratory Berkeley, CA 94720-8235 Phone : 510-486-5709 Email : NWMoriarty@LBL.gov Fax : 510-486-5909 Web : CCI.LBL.gov