Figure 1.

The structure models of NAD kinase. The structure models were constructed using a homology modeling method with the full-length amino acid sequences of a NAD kinase from Archaeoglobus fulgidus (Afnk) and a NADH kinase from Arabidopsis thaliana (AtNADK3). (A–C) showed the ribbon diagram of Afnk monomer, dimer, and tetramer, respectively. The four monomers in the Afnk tetramer were labeled with A, A', B, and B' as previously reported (Liu et al., 2005). (D,E) Illustrated the ribbon diagram of AtNADK3 monomer and dimer, respectively. Models were generated in Pymol and colored by rainbow from N terminus to C terminus.