1A0L: Human Beta-Tryptase: A Ring-Like Tetramer With Active Sites Central Pore
reference: Human beta-tryptase is a ring-like tetramer with active sites facing a central pore., Pereira PJ, Bergner A, Macedo-Ribeiro S, Huber R, Matschiner G, Fritz H, Sommerhoff CP, Bode W, Nature 1998 Mar 19;392(6673):306-11. PMID: 9521329

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