function  prop = aahphob_miyazawa(aa) 
%AAHPHOB_MIYAZAWA calculates hydrophobicity scale (contact energy derived from 3D data).
%
% Author(s) :  Miyazawa S., Jernigen R.L.
% Reference :  Macromolecules 18:534-552(1985).

%   $Revision: 1.1.6.4 $  $Date: 2004/12/24 20:45:35 $
%   Copyright 2003-2004 The MathWorks, Inc.

% no input, return description string 
if nargin == 0, 
  prop = 'AAProp_ Hydrophobicity (Miyazawa et al.)';
  return
end

% create index, and index data 
ndx = double(lower(aa)) - 96;
data = [5.330; ...% A  alanine
        NaN;   ...% B  aspartic acid or asparagine
        7.930; ...% C  cysteine
        3.590; ...% D  aspartic acid
        3.650; ...% E  glutamic acid
        9.030; ...% F  phenylalanine
        4.480; ...% G  glycine
        5.100; ...% H  histidine
        8.830; ...% I  isoleucine
        NaN;   ...% J  not used 
        2.950; ...% K  lysine
        8.470; ...% L  leucine
        8.950; ...% M  methionine
        3.710; ...% N  asparagine
        NaN;   ...% O  not used 
        3.870; ...% P  proline
        3.870; ...% Q  glutamine
        4.180; ...% R  arginine
        4.090; ...% S  serine
        4.490; ...% T  threonine
        NaN;   ...% U  not used 
        7.630; ...% V  valine
        7.660; ...% W  tryptophan
        NaN;   ...% X  any amino acid
        5.890; ...% Y  tyrosine
        NaN;   ...% Z  glutamic acid or glutamine
];

prop = data(ndx);