The Dodecin from Thermus Thermophilus, a Bifunctional Cofactor Storage Protein.
Meissner, B., Schleicher, E., Weber, S., Essen, L.-O.(2007) J Biol Chem 282: 33142
- PubMed: 17855371 
- DOI: 10.1074/jbc.M704951200
- Primary Citation of Related Structures:  
2UX9, 2V18, 2V19, 2V21 - PubMed Abstract: 
Dodecins are so far the smallest known flavoproteins (68-71 amino acids) and are most likely involved in prokaryotic flavin storage. The dodecin monomers adopt a simple betaalphabetabeta-fold and assemble to hollow sphere-like dodecameric complexes. Flavin binding by the dodecin from Thermus thermophilus showed a 1:1 stoichiometry and apparent dissociation constants in the submicromolar to nanomolar range as characterized by isothermal titration calorimetry and fluorescence titrations ...