Figure 2
Overall structure of BDH. (a) The BDH monomer is shown as a ribbon diagram colored blue–cyan–green–yellow–red from the N-terminus to the C-terminus. The α-helices and β-strands are denoted by numbers and letters. (b) The four monomers in a BDH tetramer are colored differently, with the N- and C-termini indicated. (c) The structure of BDH, presented as in (a), is compared with that of AtQR (PDB entry 3ak4), which is colored gray. Most of the Rossmann-fold part superimposes well, whereas helices α6′′, α6′ and α6 deviate significantly. The bound NAD in AtQR is shown as a stick model. |