Crystal structures of mutant monomeric hexokinase I reveal multiple ADP binding sites and conformational changes relevant to allosteric regulation.
Aleshin, A.E., Kirby, C., Liu, X., Bourenkov, G.P., Bartunik, H.D., Fromm, H.J., Honzatko, R.B.(2000) J Mol Biol 296: 1001-1015
- PubMed: 10686099 
- DOI: 10.1006/jmbi.1999.3494
- Primary Citation of Related Structures:  
1CZA, 1DGK - PubMed Abstract: 
Hexokinase I, the pacemaker of glycolysis in brain tissue, is composed of two structurally similar halves connected by an alpha-helix. The enzyme dimerizes at elevated protein concentrations in solution and in crystal structures; however, almost all published data reflect the properties of a hexokinase I monomer in solution ...