New research at the Lewis Katz School of Medicine at Temple University shows that, when it comes to mitochondria, calcium has a vital function – serving as a regulator of mitochondrial ultrastructure. The new research, published in the journal Science Signaling, is the first to show that mitochondrial ultrastructure is regulated by the calcium-binding protein MICU1. John W. Elrod, PhD, Director of the Cardiovascular Research Center at the Katz School of Medicine, is senior investigator on the new study. BioBuzz highlighted the findings.