Biolayer Interferometry: A Novel Method to Elucidate Protein–Protein and Protein–DNA Interactions in the Mitochondrial DNA Replisome
A lack of effective treatment for mitochondrial diseases prompts scientists to investigate the molecular processes that underlie their development. The major cause of mitochondrial diseases is dysfunction of the sole mitochondrial DNA polymerase, DNA polymerase γ (Pol γ). The development of treatment strategies will require a detailed characterization of the molecular properties of Pol γ. A novel technique, biolayer interferometry, allows one to monitor molecular interactions in real time, thus providing an insight into the kinetics of the process. Here, we present an application of the biolayer interferometry technique to characterize the fundamental reactions that Pol γ undergoes during the initiation phase of mitochondrial DNA replication: holoenzyme formation and binding to the primer-template.
Key wordsBiolayer interferometry Protein–protein interactions Mitochondria Mitochondrial replisome
This work was supported by grant GM45295 from the National Institutes of Health, and funds from the University of Tampere to L.S.K. G.C. was supported in part by Biocenter Finland. V.H. was supported by the Academy of Finland (grants 136288 and 273192). We acknowledge infrastructure support from Biocenter Finland.
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