2D1Q:
reference: Structural basis for the spectral difference in luciferase bioluminescence., Nakatsu T, Ichiyama S, Hiratake J, Saldanha A, Kobashi N, Sakata K, Kato H, Nature. 2006 Mar 16;440(7082):372-6. PMID: 16541080

This OCA Structure page
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