5ZJ6:
reference: Phosphorylated and non-phosphorylated HCK kinase domains produced by cell-free protein expression., Katsura K, Tomabechi Y, Matsuda T, Yonemochi M, Mikuni J, Ohsawa N, Terada T, Yokoyama S, Kukimoto-Niino M, Takemoto C, Shirouzu M, Protein Expr Purif. 2018 May 21;150:92-99. doi: 10.1016/j.pep.2018.05.005. PMID: 29793032

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