title: Relating proteins by amino acid composition.
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis*; D000818:Animals; D005075:Biological Evolution; D006454:Hemoglobins; D008433:Mathematics; D008722:Methods; D011506:Proteins; D012911:Snakes; D013329:Structure-Activity Relationship
chemical_list: D000596:Amino Acids; D006454:Hemoglobins; D011506:Proteins