Magnetization of the sulfite and nitrite complexes of oxidized sulfite and nitrite reductases: EPR silent spin S = 1/2 states.

Journal Article (Journal Article)

The saturation magnetizations of the sulfite complex of oxidized sulfite reductase and the nitrite complex of oxidized nitrite reductase have been measured to determine their spin state. Each shows the saturation magnetization signal of a spin S = 1/2 state with sigma g2 = 16, which is typical of low-spin ferrihemes. However, the EPR spectra of these complexes lack the expected signal intensity of a spin S = 1/2 state. Indeed, one of these complexes is EPR silent. The reasons for this unexpectedly low EPR signal intensity are considered.

Full Text

Duke Authors

Cited Authors

  • Day, EP; Peterson, J; Bonvoisin, JJ; Young, LJ; Wilkerson, JO; Siegel, LM

Published Date

  • March 22, 1988

Published In

Volume / Issue

  • 27 / 6

Start / End Page

  • 2126 - 2132

PubMed ID

  • 2837283

International Standard Serial Number (ISSN)

  • 0006-2960

Digital Object Identifier (DOI)

  • 10.1021/bi00406a046


  • eng

Conference Location

  • United States