2AYL:
reference: 2.0 angstroms structure of prostaglandin H2 synthase-1 reconstituted with a manganese porphyrin cofactor., Gupta K, Selinsky BS, Loll PJ, Acta Crystallogr D Biol Crystallogr. 2006 Feb;62(Pt 2):151-6. Epub 2006, Jan 18. PMID: 16421446

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