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...

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...

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...

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...

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...