1LLT:
reference: Dominating IgE-binding epitope of Bet v 1, the major allergen of birch pollen, characterized by X-ray crystallography and site-directed mutagenesis., Spangfort MD, Mirza O, Ipsen H, Van Neerven RJ, Gajhede M, Larsen JN, J Immunol 2003 Sep 15;171(6):3084-90. PMID: 12960334

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