From: TorsiFlex: an automatic generator of torsional conformers. Application to the twenty proteinogenic amino acids
Amino acid
\(\chi _{\mathrm{st}}\) (%)
Asp
0.3
Glu
1.3
Ala
0.0
Gly
Ile
3.0
Leu
0.6
Pro
0.2
Val
Asn
0.1
Gln
1.7
Phe
Trp
9.4
Tyr
Arg
3.5
HisD
HisE
0.4
Lys
Ser
Thr
Cys
0.5
Met
7.0