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Z-scores of the amino acid distribution: (A) node 16 (PB h), (B) nodes 04 and 20 (PB p), and (C) nodes 05 and 18 (PB a). Z-scores less than −4.4 are in blue, Z-scores between −4.4 and −1.96, in green, Z-scores between −1.96 and +1.96, in white, Z-scores between +1.96 and +4.4 in orange and more than 4.4, in red. The amino acids are defined on the vertical axis in the order IVLMAFYWCPGHSTNQDERK.
