1IK6:
reference: 3D structure and significance of the GPhiXXG helix packing motif in tetramers of the E1beta subunit of pyruvate dehydrogenase from the archeon Pyrobaculum aerophilum., Kleiger G, Perry J, Eisenberg D, Biochemistry 2001 Dec 4;40(48):14484-92. PMID: 11724561

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