2EZ1:
reference: Structures of apo- and holo-tyrosine phenol-lyase reveal a catalytically critical closed conformation and suggest a mechanism for activation by K+ ions., Milic D, Matkovic-Calogovic D, Demidkina TV, Kulikova VV, Sinitzina NI, Antson AA, Biochemistry. 2006 Jun 20;45(24):7544-52. PMID: 16768450

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