ProFold: Protein Fold Classification with Additional Structural Features and a Novel Ensemble Classifier

Table 1

The eight states of DSSP feature in four groups.

Eight-state SS	Code	Description	Four groups
310 helix (G)	G	Helix-3	First
Alpha-helix (H)	H	Alpha helix
pi-helix (I)	I	Helix-5
Beta-strand (E)	E	Strand	Second
Beta-bridge (B)	B	Beta bridge
Beta-turn (T)	T	Turn	Third
High curvature loop (S)	S	Bend
Irregular (L)	—	Empty, no secondary structure assigned	Fourth