amino_acid_backbone
alanine
alanine_noH
alanine_chem
amino_acid_backbone_chem
histidine_noH
lysine_noH
isoleucine
leucin_noH
aspartic_acid_noH
arginine_noH
methionine
glycine_noH
cysteine
glutamine_noH
cysteine_chem
glutamic_acid_noH
asparagine_chem
asparagine_noH
glutamic_acid_chem
glutamic_acid