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A. Initial crystallization hit of TYR456 in 0.1 M HEPES buffer, pH 7.5, 20% w/v polyethylene glycol 10000. B. Optimized crystals in 0.1 M HEPES buffer, pH 7.5, 10% w/v polyethylene glycol 10,000 and 10% w/v polyethylene glycol 20,000.
