Characterization of the Catalytic Structure of Plant Phytase, Protein Tyrosine Phosphatase-Like Phytase, and Histidine Acid Phytases and Their Biotechnological Applications

Figure 7

Secondary structure assignment of phytase from Aspergillus niger and Hordeum vulgare L. by Hydrophobicity Clusters Analysis (HCA) proposed by Bertrand et al. [57]. FASTA data proposed by Mishra et al. [50] and Dionisio et al. [4] are available at https://www.ncbi.nlm.nih.gov/protein. Hydrophobic amino acids are not distributed randomly but form clusters. The clusters are correspondent for the real positions in the regular secondary structures. Vertical clusters are often associated with beta strands and horizontal clusters correspond to alpha-helices. Aspergillus niger, Hphob = 44,8%, and Hordeum vulgare L. isoform , Hphob = 49,5%.