3BQU:
reference: Crystal structure of the complex between the F(ab)' fragment of the cross-neutralizing anti-HIV-1 antibody 2F5 and the F(ab) fragment of its anti-idiotypic antibody 3H6., Bryson S, Julien JP, Isenman DE, Kunert R, Katinger H, Pai EF, J Mol Biol. 2008 Oct 17;382(4):910-9. Epub 2008 Jul 27. PMID: 18692506

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