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EC Number	Posttranslational Modification	Commentary	Reference
6.2.1.B11	phosphoprotein	phosphorylation of His254, conformation of the phosphorylated His is stabilized by ionic interaction with the side-chain carboxyl group of Glu213alpha, a hydrogen bridge provides an ideal geometry for the phosphorylation reaction by favoring the protonation state of the imidazole group. In addition, the phosphoryl moiety forms a hydrogen bond to the hydroxyl group of Ser160alpha. In the crystal structure ckcACD1-H, the phosphate moiety also interacts with a bound metal ion	746318

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Release 2023.1 (January 2023)