4M1D:
reference: Thermodynamic Signatures of the Antigen Binding Site of mAb 447-52D Targeting the Third Variable Region of HIV-1 gp120., Killikelly A, Zhang HT, Spurrier B, Williams C, Gorny MK, Zolla-Pazner S, Kong XP, Biochemistry. 2013 Aug 23. PMID: 23944979

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