## model.make_chains() — Fetch sequences from PDB file

`make_chains(file, structure_types='structure', minimal_resolution=99.0, minimal_chain_length=30, max_nonstdres=10, chop_nonstd_termini=True, minimal_stdres=30, alignment_format='PIR')`

> This command is obsolete. Please see Chain.filter() and Chain.write() instead.

> This command fetches the sequences of the various chains found in the PDB file that has been read into memory (see model.read()).

> The sequence of every chain that matches the input criteria is written out to separate files. See Chain.filter() for a description of the input criteria, and Chain.write() for a description of the parameters controlling the output of the chain files.