4P80:
reference: Evolution of oligomeric state through allosteric pathways that mimic ligand binding., Perica T, Kondo Y, Tiwari SP, McLaughlin SH, Kemplen KR, Zhang X, Steward A, Reuter N, Clarke J, Teichmann SA, Science. 2014 Dec 19;346(6216):1254346. doi: 10.1126/science.1254346. PMID: 25525255

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