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. 2017 Feb 13;7:42362. doi: 10.1038/srep42362

Table 2. Summary of the feature sets.

Feature category Features in each category #Features
Compositional Amino acid composition (AAC) 20
Normalized AAC (NAAC) 20
Structural (STRL) Pseudo AAC (PAAC) 20
α-helix propensity 1
β-sheet propensity 1
Turn propensity 1
Physico-chemical (PHYC) Iso-electric point 1
Hydrophobicity 1
Net-charge 1