Fig. 5. Explanation of STRIDE output. The STRIDE output for Crambin is shown to explain the format and for comparison to Fig. 4. The format is simple and easily parsed, with ‘ASG’ as the first word in the lines used for assignment. The residue columns comprise the three-letter amino acid code, the chain identifier (‘-‘ for single chains), the PDB residue number and the STRIDE residue number, which starts from one for every new chain. The two structure columns contain the one-letter structure assignments (HGIEBbTC) and its short description. The columns with phi psi are followed by the column with solvent accessibility (measured in Å2).