Upper HN    GLU-  75 - HA    GLU-  75   2.49   5   0.16   0.25          + + +  +   *
    Upper HN    LEU   17 - HB3   LEU   17   3.36  10   0.12   0.24   +++     + +*+++   +
    Upper HB2   LEU   17 - HN    GLU-  18   3.83   1   0.11   0.29                     *
    Cutoffs: Upper distance limits  :    0.20 A