3CVA:
reference: A conserved hydrophobic core at Bcl-x(L) mediates its structural stability and binding affinity with BH3-domain peptide of pro-apoptotic protein., Feng Y, Zhang L, Hu T, Shen X, Ding J, Chen K, Jiang H, Liu D, Arch Biochem Biophys. 2009 Apr 1;484(1):46-54. Epub 2009 Jan 10. PMID: 19161970

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