Residual occurrence and energy property of proteins in HNP model*
Jiang Zhou-Tinga), Dou Wen-Huia), Shen Yub), Sun Ting-Tingc), Xu Penga)
       
Histogram of Residual occurrence. Twenty residues are simplified as three types of beads, i.e., H, N, and P according to the MJ matrix in Ref. [ 26 ]. The occurrences of H, N, and P are obtained from the statistical results in 146 protein samples listed in Table  1 . The sequence and secondary structures of each protein can be downloaded from http://www.pdb.org .