Manganese Microperoxidase-8

Demetalation of Fe(III) microperoxidase-8 (MP8) by anhydrous HF gives metal-free MP8, a convenient starting material for a wide variety of metal-substituted MP8 derivatives, including Mn(III)MP8. Mn(III)MP8 was produced by treatment of metal-free MP8 with manganous acetate in aerated aqueous solutio...

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Veröffentlicht in:Inorganic chemistry 1998-04, Vol.37 (8), p.1841-1843
Hauptverfasser: Low, Donald W, Abedin, Sakena, Yang, Grace, Winkler, Jay R, Gray, Harry B
Format: Artikel
Sprache:eng
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Zusammenfassung:Demetalation of Fe(III) microperoxidase-8 (MP8) by anhydrous HF gives metal-free MP8, a convenient starting material for a wide variety of metal-substituted MP8 derivatives, including Mn(III)MP8. Mn(III)MP8 was produced by treatment of metal-free MP8 with manganous acetate in aerated aqueous solution; it was characterized by mass spectrometry and UV−visible absorption spectroscopy. Resonance Raman spectra suggest that Mn(III)MP8 contains histidine and water axial ligands at neutral pH. The Mn(IV)O derivative is readily prepared by oxidation of Mn(III)MP8 with hydrogen peroxide or Ru(bpy)3 3+ (bpy = 2,2‘-bipyridine).
ISSN:0020-1669
1520-510X
DOI:10.1021/ic971166c