4NQT:
reference: Antiparallel Conformation of Knob and Hole Aglycosylated Half-Antibody Homodimers Is Mediated by a CH2-CH3 Hydrophobic Interaction., Michael Elliott J, Ultsch M, Lee J, Tong R, Takeda K, Spiess C, Eigenbrot C, Scheer JM, J Mol Biol. 2014 Feb 24. pii: S0022-2836(14)00097-7. doi:, 10.1016/j.jmb.2014.02.015. PMID: 24576605

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