Cover Feature: Understanding the P‐Cluster of Vanadium Nitrogenase: an EPR and XAS Study of the Holo vs. Apo Forms of the Enzyme (ChemBioChem 3/2025)

The cover illustrates the structure of the P-cluster, one of the two Fe-S clusters present in the catalytic moiety of nitrogenase. The background illustration is the vanadium nitrogenase catalytic component (VFe), which is the focus of article 10.1002/cbic.202400833. In this work, Laure Decamps, Serena DeBeer, and co-workers combine biochemical, electron paramagnetic resonance (EPR) spectroscopy, and extended X-ray absorption fine structure (EXAFS) data to shed light on open questions about the structural differences between the holo and apo forms of VFe.