The multitude of iron–sulfur clusters in respiratory complex I

DOI: 10.1016/j.bbabio.2016.02.018 Authors: Emmanuel Gnandt, Katerina Dörner, Marc F.J. Strampraad, Simon de Vries, Thorsten Friedrich Abstract: N/A

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...

Mechanistic Diversity of Radical S-Adenosylmethionine (SAM)-dependent Methylation

DOI: 10.1074/jbc.r114.607044 Authors: Matthew Bauerle, Erica L. Schwalm, Squire J. Booker Abstract: Radical S-adenosylmethionine (SAM) enzymes use the oxidizing power of a 5′-deoxyadenosyl 5′-radical to initiate an amazing array of transformations, usually...

Energy Transduction in Nitrogenase

DOI: 10.1021/acs.accounts.8b00112 Authors: Lance C. Seefeldt, Brian M. Hoffman, John W. Peters, Simone Raugei, David N. Beratan, Edwin Antony, Dennis R. Dean Abstract: Nitrogenase is a complicated two-component enzyme system that uses ATP binding and hydrolysis energy...

Regulation of Photosynthetic Induction State by the Magnitude and Duration of Low Light Exposure

DOI: 10.1104/pp.105.4.1115 Authors: Gretchen F. Sassenrath, Robert W. Pearcy Abstract: This study was undertaken to examine the dependence of the regulatory enzymes of photosynthetic induction on photon flux density (PFD) exposure in soybean (Glycine max L.). The...

Preliminary study of water and some element contents in boar spermatozoa, before, during and after freezing

DOI: 10.1530/jrf.0.0870613 Authors: J.L. Courtens, H. Ekwall, M. Paquignon, L. Plöen Abstract: Boar semen was analysed by electron microscopy coupled to image analysis and X-ray energy dispersive spectroscopy, during the usual process for freezing and thawing in field...