Mapping the Initial Stages of a Protective Pathway that Enhances Catalytic Turnover by a Lytic Polysaccharide Monooxygenase

DOI: 10.1021/jacs.3c06607 Authors: Jingming Zhao, Ying Zhuo, Daniel E. Díaz, Muralidharan Shanmugam, Abbey Telfer, Peter J. Lindley, Daniel Kracher, Takahiro Hayashi, Lisa S. Seibt, Florence J. Hardy, Oliver Manners, Tobias M. Hedison, Katherine A. Hollywood, Reynard...

Functionality of the Three-Site Ferroxidase Center of Escherichia coli Bacterial Ferritin (EcFtnA)

DOI: 10.1021/bi401517f Authors: Fadi Bou‐Abdallah, Heiko Yang, A. Awomolo, Bret Cooper, Mark Woodhall, Simon C. Andrews, N. Dennis Chasteen Abstract: At least three ferritins are found in the bacterium Escherichia coli: the heme-containing bacterioferritin (EcBFR) and...

Activation of [CrCl₃{PPh₂N(ⁱPr)PPh₂}] for the selective oligomerisation of ethene: a Cr K-edge XAFS study

DOI: 10.1039/c6cy00902f Authors: Stuart A. Bartlett, Jerome Moulin, Moniek Tromp, Gillian Reid, A. J. Dent, Giannantonio Cibin, David S. McGuinness, John Evans Abstract: Freeze-quench XAFS reveals initial methylation of the Cr(iii) precursor prior to reduction to...

Mechanistic Analysis of Stereodivergent Nitroalkane Cyclopropanation Catalyzed by Nonheme Iron Enzymes

DOI: 10.1021/jacs.3c08413 Authors: Richiro Ushimaru, Lide Cha, Shotaro Shimo, Xiaojun Li, Jared C. Paris, Takahiro Mori, Kazunori Miyamoto, Lindsay Coffer, Masanobu Uchiyama, Yisong Guo, Wei‐chen Chang, Ikuro Abe Abstract: BelL and HrmJ are α-ketoglutarate-dependent...

Spectroscopic evidence for the role of a site of the di-iron catalytic center of ferritins in tuning the kinetics of Fe( ii ) oxidation

DOI: 10.1039/c6mb00235h Authors: Kourosh Honarmand Ebrahimi, Eckhard Bill, Peter‐Leon Hagedoorn, Wilfred R. Hagen Abstract: Ferritin is a nanocage protein made of 24 subunits. Its major role is to manage intracellular concentrations of free Fe(ii) and Fe(iii) ions,...