Editing SecStrAnnotator:OneToMany (section)

==Preparing structural data==

A list of PDB structures corresponding to a protein family can be obtained from [http://www.ebi.ac.uk/pdbe/pdbe-rest-api PDBe REST API] using <code>domains_from_pdbeapi.py</code>. The protein family can be identified by a CATH code, such as 1.10.630.10 ([http://cathdb.info/ CATH]), or by a Pfam accession, such as PF00067 ([https://pfam.xfam.org/ Pfam]):

 python3 domains_from_pdbeapi.py 1.10.630.10 > family_from_cath.json
 
 python3 domains_from_pdbeapi.py PF00067 > family_from_pfam.json

The structures are then downloaded from [https://www.ebi.ac.uk/pdbe/ PDBe] by <code>download_from_pdbe.py</code>:

 python3 download_from_pdbe.py family_from_cath.json my_structure_directory

In this moment, all necessary structures should be in the directory <code>my_structure_directory</code>.