Fig. 3.

Structural aspects of human MAO isoforms. a Chromosomal localization of human MOA isoforms. b Amino acid sequence alignment of human MAO isoforms. Differing amino acid residues are highlighted by cyan boxes. c Overlay of the 3D structure of human MAO isoforms. MAO-A is shown in green, and MAO-B is shown in cyan. The FAD group is highlighted in orange. d Comparison of the active site cavities of the human MAO isoforms. MAO-A is shown in green, and MAO-B is shown in cyan. The cavities of MAO-A and MAO-B are represented by blue or green dots, respectively. The FAD group is shown in orange