Upper HA    ARG+  53 - HN    GLU-  54   3.08  20   0.37   0.37  ++++++++++++++*+++++
    Upper HN    LEU   90 - HN    ALA   91   4.11  20   0.30   0.31  +++++++*++++++++++++
    Upper HN    LEU   17 - HB3   LEU   17   3.39  14   0.15   0.21    +++ +++++ +++ + +*
    Upper HN    GLU-  75 - HA    GLU-  75   2.52   1   0.15   0.21                     *
    Upper HN    THR   38 - HN    THR   39   4.42   1   0.09   0.23                     *
    Upper HB2   LEU   17 - HN    GLU-  18   3.89   1   0.06   0.24                     *
    Upper HN    THR   38 - HB    THR   38   3.21   1   0.01   0.27                     *
    Cutoffs: Upper distance limits  :    0.20 A