Fig. 2
From: Defining novel plant polyamine oxidase subfamilies through molecular modeling and sequence analysis
Protein structure of plant PAOs subfamilies. Protein structures were obtained by molecular modeling against the appropriate template. ZmPAO1 and MmAPAO templates showed on top colored by secondary structure, (a) and (d) respectively. Each picture shows an overlap of the structures within each group of sequences. The color represents percentage of identity. (b) Clade I. (c) Clade II. (e) Clade III. (f) Clade IV. (g) Clade V