4G6B:
reference: Comparative analysis of folding and substrate binding sites between regulated hexameric type II citrate synthases and unregulated dimeric type I enzymes., Nguyen NT, Maurus R, Stokell DJ, Ayed A, Duckworth HW, Brayer GD, Biochemistry. 2001 Nov 6;40(44):13177-87. PMID: 11683626

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