Version Compatibility

Reference examples tested with: BioPython 1.83+

Before using code patterns, verify installed versions match. If versions differ:

• Python: pip show <package> then help(module.function) to check signatures

If code throws ImportError, AttributeError, or TypeError, introspect the installed package and adapt the example to match the actual API rather than retrying.

Structure Navigation

"Access residues and atoms in a PDB structure" → Navigate the Structure-Model-Chain-Residue-Atom hierarchy to iterate over components, extract sequences, and access atomic coordinates.

• Python: structure[0]['A'][100]['CA'].get_vector() for direct access

Navigate the Structure-Model-Chain-Residue-Atom (SMCRA) hierarchy to access and iterate over structure components.

Required Imports