Structural diversity of polyoxomolybdate clusters along the three-fold axis of the molybdenum storage protein

Nature developed a special protein that stores Mo as compact polyoxomolybdate (POM) clusters. The 1.35 Å X-ray structure revealed reliable electron density for two new POM cluster ensembles along the threefold axis. The protein template wraps the new POM clusters, thereby determines their complementary structure and suppresses their hydrolysis.187