Time-resolved Infrared Spectroscopy Reveals a Stable Ferric Heme-NO Intermediate in the Reaction of Paracoccus pantotrophus Cytochrome cd 1 Nitrite Reductase with Nitrite

DOI: 10.1074/jbc.m005033200 Authors: Simon J. George, James W.A. Allen, Stuart J. Ferguson, R. N. F. Thorneley Abstract: Cytochrome cd(1) is a respiratory enzyme that catalyzes the physiological one-electron reduction of nitrite to nitric oxide. The enzyme is a dimer,...

Trapping and spectroscopic characterization of an Fe^III-superoxo intermediate from a nonheme mononuclear iron-containing enzyme

DOI: 10.1073/pnas.1010015107 Authors: Michael M. Mbughuni, Mrinmoy Chakrabarti, Joshua A. Hayden, Emile L. Bominaar, Michael P. Hendrich, Eckard Münck, John D. Lipscomb Abstract: Fe(III)-O(2)*(-) intermediates are well known in heme enzymes, but none have been...

Structure of the V. cholerae Na+-pumping NADH:quinone oxidoreductase

DOI: 10.1038/nature14003 Authors: Julia Steuber, Georg Vohl, Marco S. Casutt, Thomas Vorburger, Kay Diederichs, G. Fritz Abstract: N/A

μ-1,2-Peroxobridged di-iron(III) dimer formation in human H-chain ferritin

DOI: 10.1042/bj3640057 Authors: Fadi Bou‐Abdallah, Georgia C. Papaefthymiou, Danielle M Scheswohl, Sean D. STANGA, Paolo Arosio, N. Dennis Chasteen Abstract: Biomineralization of the ferritin iron core involves a complex series of events in which H(2)O(2) is produced...

Localization of a Catalytic Intermediate Bound to the FeMo-cofactor of Nitrogenase

DOI: 10.1074/jbc.m403194200 Authors: Robert Y. Igarashi, Patricia C. Dos Santos, Walter G. Niehaus, Ian Dance, Dennis R. Dean, Lance C. Seefeldt Abstract: Nitrogenase catalyzes the biological reduction of N(2) to ammonia (nitrogen fixation) as well as the reduction of...