1JFQ:
reference: Structural analysis of mutants of high-affinity and low-affinity p-azophenylarsonate-specific antibodies generated by alanine scanning of heavy chain complementarity-determining region 2., Parhami-Seren B, Viswanathan M, Strong RK, Margolies MN, J Immunol 2001 Nov 1;167(9):5129-35. PMID: 11673524

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