Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/7NSA
Triphosphate tunnel metalloenzyme Saci_0718ACETATE IONCALCIUM IONDI(HYDROXYETHYL)ETHERGLYCEROLPYROPHOSPHATE 2-
sulfolobus acidocaldariustriphosphatetunnelmetalloenzymecomplex