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Multiple amino acid sequence alignment and a model of the tertiary structure of TgH4. (A) H4 amino acid sequence were aligned by Genedoc software. The amino acid sequences of histone 4 in different strains of Toxoplasma gondii were identical, and there was only a five amino acid difference between T. gondii and Homo sapiens. (B) A model of the tertiary structure of TgH4 was built using SWISS‐MODEL approaches and it matches the known H4 templates built before.
