../ pdb_000021aa_xyz-ext-atom_v1-0.xml.gz 09-Oct-2026 16:09 230K pdb_000021aa_xyz-no-atom_v1-0.xml.gz 09-Oct-2026 16:09 35K pdb_000021aa_xyz_v1-0.cif.gz 09-Oct-2026 16:09 261K pdb_000021aa_xyz_v1-0.xml.gz 09-Oct-2026 16:09 350K