function [matrix, matrixInfo] = pam30
%PAM30 substitution matrix in 1/2 bit units,
%   Expected score = -5.06, Entropy = 2.57 bits
%   Lowest score = -17, Highest score = 13
%
%   Order:
%   A  R  N  D  C  Q  E  G  H  I  L  K  M  F  P  S  T  W  Y  V  B  Z  X  *
%
%   [MATRIX,MATRIXINFO] = PAM30 returns a structure of information about
%   the matrix with fields Name, Scale, Entropy, ExpectedScore, LowestScore,
%   HighestScore and Order.

% Source:  ftp://ftp.ncbi.nih.gov/blast/matrices/
%   $Revision: 1.5 $ 

matrix = [...
    6  -7  -4  -3  -6  -4  -2  -2  -7  -5  -6  -7  -5  -8  -2   0  -1 -13  -8  -2  -3  -3  -3 -17;...
   -7   8  -6 -10  -8  -2  -9  -9  -2  -5  -8   0  -4  -9  -4  -3  -6  -2 -10  -8  -7  -4  -6 -17;...
   -4  -6   8   2 -11  -3  -2  -3   0  -5  -7  -1  -9  -9  -6   0  -2  -8  -4  -8   6  -3  -3 -17;...
   -3 -10   2   8 -14  -2   2  -3  -4  -7 -12  -4 -11 -15  -8  -4  -5 -15 -11  -8   6   1  -5 -17;...
   -6  -8 -11 -14  10 -14 -14  -9  -7  -6 -15 -14 -13 -13  -8  -3  -8 -15  -4  -6 -12 -14  -9 -17;...
   -4  -2  -3  -2 -14   8   1  -7   1  -8  -5  -3  -4 -13  -3  -5  -5 -13 -12  -7  -3   6  -5 -17;...
   -2  -9  -2   2 -14   1   8  -4  -5  -5  -9  -4  -7 -14  -5  -4  -6 -17  -8  -6   1   6  -5 -17;...
   -2  -9  -3  -3  -9  -7  -4   6  -9 -11 -10  -7  -8  -9  -6  -2  -6 -15 -14  -5  -3  -5  -5 -17;...
   -7  -2   0  -4  -7   1  -5  -9   9  -9  -6  -6 -10  -6  -4  -6  -7  -7  -3  -6  -1  -1  -5 -17;...
   -5  -5  -5  -7  -6  -8  -5 -11  -9   8  -1  -6  -1  -2  -8  -7  -2 -14  -6   2  -6  -6  -5 -17;...
   -6  -8  -7 -12 -15  -5  -9 -10  -6  -1   7  -8   1  -3  -7  -8  -7  -6  -7  -2  -9  -7  -6 -17;...
   -7   0  -1  -4 -14  -3  -4  -7  -6  -6  -8   7  -2 -14  -6  -4  -3 -12  -9  -9  -2  -4  -5 -17;...
   -5  -4  -9 -11 -13  -4  -7  -8 -10  -1   1  -2  11  -4  -8  -5  -4 -13 -11  -1 -10  -5  -5 -17;...
   -8  -9  -9 -15 -13 -13 -14  -9  -6  -2  -3 -14  -4   9 -10  -6  -9  -4   2  -8 -10 -13  -8 -17;...
   -2  -4  -6  -8  -8  -3  -5  -6  -4  -8  -7  -6  -8 -10   8  -2  -4 -14 -13  -6  -7  -4  -5 -17;...
    0  -3   0  -4  -3  -5  -4  -2  -6  -7  -8  -4  -5  -6  -2   6   0  -5  -7  -6  -1  -5  -3 -17;...
   -1  -6  -2  -5  -8  -5  -6  -6  -7  -2  -7  -3  -4  -9  -4   0   7 -13  -6  -3  -3  -6  -4 -17;...
  -13  -2  -8 -15 -15 -13 -17 -15  -7 -14  -6 -12 -13  -4 -14  -5 -13  13  -5 -15 -10 -14 -11 -17;...
   -8 -10  -4 -11  -4 -12  -8 -14  -3  -6  -7  -9 -11   2 -13  -7  -6  -5  10  -7  -6  -9  -7 -17;...
   -2  -8  -8  -8  -6  -7  -6  -5  -6   2  -2  -9  -1  -8  -6  -6  -3 -15  -7   7  -8  -6  -5 -17;...
   -3  -7   6   6 -12  -3   1  -3  -1  -6  -9  -2 -10 -10  -7  -1  -3 -10  -6  -8   6   0  -5 -17;...
   -3  -4  -3   1 -14   6   6  -5  -1  -6  -7  -4  -5 -13  -4  -5  -6 -14  -9  -6   0   6  -5 -17;...
   -3  -6  -3  -5  -9  -5  -5  -5  -5  -5  -6  -5  -5  -8  -5  -3  -4 -11  -7  -5  -5  -5  -5 -17;...
  -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17 -17   1;...
    ];

if nargout >1
    matrixInfo.Name = 'PAM30';
    matrixInfo.Scale = 1/2;
    matrixInfo.Entropy = 2.57 ;
    matrixInfo.ExpectedScore = -5.06;
    matrixInfo.LowestScore = -17;
    matrixInfo.HighestScore = 13;
    matrixInfo.Order = 'ARNDCQEGHILKMFPSTWYVBZX*';
end