We published a new exciting paper on the role of Arghef5 in neuromuscular junction development in collaboration with the Prószyński lab at the Nencki Institute. The paper is open access and available here. We used a combination of in vitro work and in vivo conditional knockout studies in mice to show that Arhgef5 is essential for the maintenance of the integrity of neuromuscular junctions in aging mice. Congrats to all the authors, especially the first author Krzysztof Bernadzki, who spearheaded the in vivo work.