# useful hashes for converting one letter code to mass
#

my %s2m = (A =>  71.0371, C => 103.0092, D => 115.0269, E => 129.0426,
        F => 147.0684, G =>  57.0215, H => 137.0589, I => 113.0841,
        K => 128.0950, L => 113.0841, M => 131.0405, N => 114.0429,
        P =>  97.0528, Q => 128.0586, R => 156.1011, S =>  87.0320,
        T => 101.0477, V =>  99.0684, W => 186.0793, Y => 163.0633,
        '\s' => 0.0, "*" => 0.0
       );
my %s2a = (A =>  71.08, C => 103.14, D => 115.09, E => 129.12,
        F => 147.18, G =>  57.05, H => 137.14, I => 113.16,
        K => 128.17, L => 113.16, M => 131.19, N => 114.10,
        P =>  97.12, Q => 128.13, R => 156.19, S =>  87.08,
        T => 101.10, V =>  99.13, W => 186.21, Y => 163.18,
        '\s' => 0.0, "*" => 0.0
       );