2OGG:
reference: The crystal structure of the effector-binding domain of the trehalose repressor TreR from Bacillus subtilis 168 reveals a unique quarternary assembly., Rezacova P, Krejcirikova V, Borek D, Moy SF, Joachimiak A, Otwinowski Z, Proteins. 2007 Aug 17;69(3):679-682. PMID: 17705272

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