June 2013
 

New insight into mechanism of rhomboid proteases


In a minireview recently published in The Journal of Biological Chemistry, Ya Ha and Yi Xue of the Yale School of Medicine and Yoshinori Akiyama of Kyoto University discuss work done to determine the mechanism of rhomboid proteases. The minireview specifically focuses on research done on the catalytic mechanism and conformation changes in the catalytic core of the E. coli rhomboid protease GlpG.

 

Revisiting metals in the fifth edition of the thematic minireview series


The Journal of Biological Chemistry’s thematic minireview series “Metals in Biology” is back for a fifth edition. This series features metals in biochemistry and human health and is coordinated by F. Peter Guengerich of Vanderbilt University, a JBC associate editor. The first two editions of “Metals in Biology” discussed iron, copper, selenium, zinc, nickel, vanadium and arsenic, the third focused on iron homeostasis and eukaryotic cells, and the fourth concentrated on metal transport and homeostasis. The latest collection of minireviews covers the molybdenum prosthetic group, or pterin Moco; the biosynthesis of M-cluster molybdenum prosthetic group of nitrogenase; the biosynthesis of the nickel-based metallocenter of the enzyme urease; several of the processing, transport and medical aspects of cobalamins; and the growing roles of heme sensor proteins.

 

Suggested shorthand for lipid structures identified through mass spectrometry


The June issue of the Journal of Lipid Research features a proposal for standardized terminology for lipid structures elucidated via mass spectrometry. The proposal by Gerhard Liebisch of the University of Regensburg and colleagues would complement the currently used comprehensive classification system for lipids on the LIPID MAPS website.

 

Hens shift lipid metabolism away from egg-making when stressed


It’s hard to make babies when you’re stressed, even if you are a chicken. In a recent paper in the Journal of Lipid Research, a group of Chinese investigators looked into how stress can disrupt lipid metabolism, a source of reproductive energy, in egg-laying hens.

 

Understanding the role of hypoxia-inducible factors in melanoma


In Molecular & Cellular Proteomics, a team in France demonstrated that two hypoxia-inducible factors play a critical role in the progression of melanoma.

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