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Residue.phi -- $ \phi $ dihedral angle

This is a Dihedral object, with information about the residue's $ \phi $ dihedral. (If no $ \phi $ dihedral is defined for this residue, it is the special Python value None instead.) See Section 6.20 for more information on Dihedral objects. Not available for alignment sequence residues.

Ben Webb 2008-05-05