2CW8:
reference: Crystal structure of intein homing endonuclease II encoded in DNA polymerase gene from hyperthermophilic archaeon Thermococcus kodakaraensis strain KOD1., Matsumura H, Takahashi H, Inoue T, Yamamoto T, Hashimoto H, Nishioka M, Fujiwara S, Takagi M, Imanaka T, Kai Y, Proteins. 2006 May 15;63(3):711-5. PMID: 16493661

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