TurboID-based proximity labeling to identify LONP1-targeting proteins

It is documented that intracellular succinate levels are maintained and regulated by mitochondrial complexes II. In order to define the LONP1-dependent regulators of succinate content, unbiased TurboID-based proximity labeling was employed to exploit LONP1-targeting proteins. Our results showed that 63.5% of the proteins identified by LONP1-N-TurboID-based proximity labeling are mitochondrial proteins. Functional protein association networks analysis of the identified proteins indicated that these biotinylated proteins are related to carboxylic acid metabolic process, mitochondrial organization and mitochondrial gene expression.