4W96:
reference: Preparation of a Cross-Linked Porous Protein Crystal Containing Ru Carbonyl Complexes as a CO-Releasing Extracellular Scaffold., Tabe H, Fujita K, Abe S, Tsujimoto M, Kuchimaru T, Kizaka-Kondoh S, Takano M, Kitagawa S, Ueno T, Inorg Chem. 2014 Dec 15. PMID: 25494847

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