2VLY:
reference: The crystal structure of peroxymyoglobin generated through cryoradiolytic reduction of myoglobin compound III during data collection., Hersleth HP, Hsiao YW, Ryde U, Gorbitz CH, Andersson KK, Biochem J. 2008 Jun 1;412(2):257-64. PMID: 18215120

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