NAME

     EyeBackbone

DESCRIPTION

     This module extracts the backbone elements from a PDB file. The elements are
     then connected and the chain ends determined. The elements are then sorted
     by sequence in the chain. NOTE: element id's are assigned so that the N's 
     have id's of 0,4,8... the alpha carbons, 1,5,9... and so on. The
     output is a Chemistry Pyramid. The connectivity is determined by the
     standard vdw test.

WIDGETS

   Filename -- File Browser
      Filename of PDB file

OUTPUTS

   Molecule -- Pyramid
      (n-layer, optional-baseLat, n-D compression, n-compression type).
      The output is a Chemical-based pyramid. This pyramid has 2  
      layers  of  lattices. The base layer (0) contains the bond order
      and 2 atom numbers that comprise the bond. The next layer (1), 
      contains the connectivity information, atom data, and the cartesian
      coordinates. Eact atom has 4 data variables: ID, element number
      vdw radius, and colour number. 

KNOWN PROBLEMS

      NOTE: Here element id's do not correspond to id's in the PDB file.

SEE ALSO

    
      EyeRibbons,EyeBalls,AtomicSurf