Fig. 2
From: PDBeCIF: an open-source mmCIF/CIF parsing and processing package
Comparative analysis of mmCIF parsers available from Python. PDBeCIF package was the fastest in both cases with parsing times of 0.3 s, and 2.28 s respectively. We achieved further speed optimization by discarding the atom_site category (pdbecif_ignore column). One reason for atomium or Biopython being considerably slower than PDBeCIF is that PDBeCIF is a pure algorithmic parser that does not make any structure interpretation. a Comparison of parsing speed for small protein (PDB id: 1tqn, 3999 atoms). b Comparison of parsing speed for a sizeable flagellar motor-hook (PDB id: 7cgo; ~ 335K atoms).