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Diiron-Oxygen Proteins

The oxygen-carrying function is performed in some invertebrates by haemerythrin which, in spite of its name, does not contain haem. It is a diiron-oxygen protein. See K. K. Anderson and A. Gralund, Adv. Inorg. Chem. 43, 359-408 (1995). [Pg.1102]

Diiron-Oxygen Proteins K. Kristoffer Andersson and Astrid Graslund... [Pg.513]

Magnetic coupling, between dimeric iron ions, diiron-oxygen proteins, 43 365-366 Magnetic interactions, 20 134-142 direct cation-cation, 20 139, 140 indirect cation-anion-cation, 20 140-142 Magnetic measurements, 32 58 Magnetic moments... [Pg.169]

Resonance Raman parameters, diiron-oxygen proteins, 43 367 Resonance Raman spectroscopy... [Pg.257]

I. Introduction and Relevance II. General Features of the Diiron-Oxygen Proteins... [Pg.359]

This review will describe an emerging class of proteins that we would like to call the diiron-oxygen proteins, which are part of a general class of iron-oxygen proteins. We will specifically deal with proteins... [Pg.359]

The presentation in 1993 of the structure of the hydroxylase component of methane monooxygenase (MMOH) by Rosenzweig et al. (15) is the third published three-dimensional structure of a diiron-oxygen protein (Fig. 1). The previous two are from hemerythrin (Hr) (16,17) and protein R2 of E. coli ribonucleotide reductase (RNR-R2) (18, 19). Some other dinuclear iron proteins with known fi-oxo or p.-hydroxo bridges are purple acid phosphatases (PAP) [(e.g., uteroferrin (Uf)] (20, 21), ferritins (in early stages of nucleation) (22), rubrerythrin (Rr) (23-26), nigerythrin (26), and soluble stearoyl-acyl carrier protein A desaturase (A-AGP) (27, 28). [Pg.360]

The metal clusters are not the only similarity in the diiron-oxygen protein group. Another common denominator is that all can react with dioxygen, albeit in different states of oxidation. RNR-R2 (30) and MMOH (31) proteins have in common that both cleave an oxygen-oxygen bond, with the iron cluster as an active participant. Hemerythrin is different from these others with five histidines (1-7) in the cluster... [Pg.360]

Midpoint Potentials for Selected Diiron-Oxygen Proteins"... [Pg.361]

Mixed-valent [Fe(II)Fe(III)] antiferromagnetically coupled (i.e., with an S = 2 ground state) EPR spectra should show all three g-values below 2.0 for diiron-oxygen proteins. This distinguishes them from,... [Pg.368]

See other pages where Diiron-Oxygen Proteins is mentioned: [Pg.210]    [Pg.151]    [Pg.152]    [Pg.193]    [Pg.255]    [Pg.515]    [Pg.444]    [Pg.388]    [Pg.359]    [Pg.361]    [Pg.363]    [Pg.363]    [Pg.363]    [Pg.365]    [Pg.367]    [Pg.368]    [Pg.369]    [Pg.371]    [Pg.373]    [Pg.375]    [Pg.377]    [Pg.379]    [Pg.381]    [Pg.383]    [Pg.387]    [Pg.389]    [Pg.391]    [Pg.393]    [Pg.395]    [Pg.397]   


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