Octamer: Tetramer of dimers

This protein has one 4-fold and four 2-fold axes of rotational symmetry.

Can you find them?

Mattevi, A., Fraaije, M. W., Coda, A., van Berkel, W. J.: Crystallization and preliminary X-ray analysis of the flavoenzyme vanillyl-alcohol oxidase from Penicillium simplicissimum. Proteins 27 pp. 601 (1997) (PubMed)

1ahu (PDB)

Dodecamer: trimer of tetramers