• Publications
  • Influence
Insights into Structure and Function of the Active Site of SoxAX Cytochromes*
Crystal structures of SoxAX with a heme ligand substitution (C236M) uncovered an inherent flexibility of this SoxA heme site, with both bonding distances and relative ligand orientation differing between asymmetric units and the new residue, Met236, representing an unusual rotamer of methionine. Expand
SoxAX Cytochromes, a New Type of Heme Copper Protein Involved in Bacterial Energy Generation from Sulfur Compounds*
It is proposed that SoxAX cytochromes are a new type of heme-copper proteins, with SoxAX-mediated S-S bond formation involving both the copper and heme centers. Expand
An unprecedented Fe(III)(mu-OH)Zn(II) complex that mimics the structural and functional properties of purple acid phosphatases.
It is demonstrated that the μ-hydroxo group in the {FeIII(μ-OH)(μ-ROPO3)ZnII} intermediate is unable to hydrolyze the monoester 2,4-dinitrophenylphosphate (DNPP), which suggests that theμ-hydroxyo group is a significantly poorer nucleophile than the terminally FeIII-bound OH- group. Expand
Effects of vibronic coupling on the EPR spectra of copper(II) doped K2ZnF4
Abstract The single crystal g-values of ≈≈ 1% Cu2+ doped into tetragonal K2ZnF4 measured over a temperature range between 4 and 295 K are reported. The results are interpreted in terms of aExpand
Electron paramagnetic resonance of Ni(II) doped tris(ethylenediamine)zinc(II) dinitrate
Variable temperature electron paramagnetic resonance spectra of tris(ethylenediamine)zinc(II) dinitrate single crystals doped with NI(II) have been measured. The host crystal undergoes a trigonal toExpand
Completion of the isomorphous Ln(trensal) series
The CeIII, PrIII, NdIII, GdIII and YbIII complexes of the heptadentate ligand 2,2´,2´´-tris(salicylideneimino) triethylamine, H3trensal (in its trianionic form), have been synthesized andExpand
Photoinduced electron transfer and electronic energy transfer in naphthyl-appended cyclams.
A series of novel macrocyclic tetraaza ligands that incorporate a naphthalene moiety as a photoactive chromophore have been prepared and structurally characterized as their Cu(II) complexes, and the emission behavior can be modulated by variations in pH and/or the presence of other Lewis acids such as Zn(II). Expand
Dynamic behavior of the Jahn-Teller distorted Cu(H(2)O)(6)(2+) ion in Cu(2+) doped Cs(2)[Zn(H(2)O)(6)](ZrF(6))(2) and the crystal structure of the host lattice.
The temperature dependence of the X- and Q-band EPR spectra of Cs(2)[Zn(H(2)O)(6)](ZrF(6))( 2) containing approximately 1% Cu(2+) is reported and suggests that in the present compound the lattice interactions change slightly with temperature. Expand
Influence of lattice interactions on the Jahn-Teller distortion of the [Cu(H2O)6]2+ ion: dependence of the crystal structure of K2[Cu(H2O)6](SO4)(2x)(SeO4)(2-2x) upon the sulfate/selenate ratio.
The temperature dependence of the structure of the mixed-anion Tutton salt K2[Cu(H2O)6](SO4)(2x)(SeO4)(2-2x) has been determined for crystals with 0, 17, 25, 68, 78, and 100% sulfate over theExpand
Structural and spectroscopic studies of a model for catechol oxidase
Symmetry arguments have been used to demonstrate that the sign of the MCD is characteristic of the tetragonally elongated environment. Expand