This utility produces annotation of secondary structure.
KSDSSP is an open-source implementation by UCSF's Computer Graphics Laboratory (authors of the molecular graphics program Chimera) of the original DSSP algorithm (Kabsch and Sander 1983).
% phenix.ksdssp model.pdb
- Kabsch, W., & Sander, C. (1983). Dictionary of Protein Secondary Structure: Pattern Recognition of Hydrogen-Bonded and Geometrical Features. Biopolymers, 22, 2577-2637.