Hi, I'm attempting to use a python script to save the names of each residue in a protein The code I have is as follows: import chimerax, sys from chimerax.core.commands import run cwd = (str(sys.argv[0][:-17])) prot = "/A" run(session, "open 3GDM") run(session, "save " + str(cwd) + "/script_content/sasa/name.defattr " + str(prot) + " & protein attrName r:name format defattr") The command being input into the command line of ChimeraX by the script is as follows: "save [file path]/name.defattr /A & protein attrName r:name format defattr" I've also tried using: "save [file path]/name.defattr attrName r:name format defattr models /A & protein" However, both commands give me a file with all the residues and all the names contained within the model rather than just the chain I'm interested in. Could you advise on how I can better use this command to save a file with the residue positions and corresponding amino acid for each residue from a single chain only? I've attached the resultant file to this email. Kind regards, David