2DLF:
reference: The pH-dependent structural variation of complementarity-determining region H3 in the crystal structures of the Fv fragment from an anti-dansyl monoclonal antibody., Nakasako M, Takahashi H, Shimba N, Shimada I, Arata Y, J Mol Biol 1999 Aug 6;291(1):117-34. PMID: 10438610

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