1B6D:
reference: The structure of an entire noncovalent immunoglobulin kappa light-chain dimer (Bence-Jones protein) reveals a weak and unusual constant domains association., Roussel A, Spinelli S, Deret S, Navaza J, Aucouturier P, Cambillau C, Eur J Biochem 1999 Feb;260(1):192-9. PMID: 10091599

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