Figure 3From: Polyphosphate - an ancient energy source and active metabolic regulatorCrystal structure of E. coli asymmetric unit polyphosphate kinase 1 [62]and its implication for polyphosphate synthesis. PPK1 contains two asymmetric units. On the picture, there is an asymmetric unit of PPK1, which contains two monomers. Each monomer of PPK1 contains amino-terminal domain (N domain) coloured in red, the "head" domain (H domain) in yellow and two carboxyterminal domains (C1 and C2 domains) in green and blue. The coordinates were downloaded from Protein Data Bank (the corresponding PDB code- 1XDO) [63] and visualized by Visual Molecular Dynamics 1.9 [64] and POV-Ray [65].Back to article page