The provided research source details the creation of MitCOM, an extensive high-resolution map of the mitochondrial complexome in yeast. Researchers utilized advanced mass spectrometry and automated component analysis to identify over 5,000 protein peaks, revealing that most mitochondrial proteins participate in multiple dynamic assemblies. A significant discovery involves the role of the protein Pth2, which functions alongside Rsp5 and Ubp16 to manage a quality-control pathway at the TOM complex. This pathway is essential for the ubiquitylation and removal of non-imported precursor proteins to maintain cellular health. By integrating these findings with an interactive online platform, the study provides a powerful resource for investigating mitochondrial biogenesis and the molecular basis of related diseases.