../ pdb_000021zx_xyz-ext-atom_v1-0.xml.gz 10-Jul-2026 15:59 280K pdb_000021zx_xyz-no-atom_v1-0.xml.gz 10-Jul-2026 15:59 65K pdb_000021zx_xyz_v1-0.cif.gz 10-Jul-2026 15:59 601K pdb_000021zx_xyz_v1-0.xml.gz 10-Jul-2026 15:59 835K