bioRxiv preprint doi: https://doi.org/10.1101/2020.11.24.395780; this version posted November 24, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 Genetic dissection of the mitochondrial lipoylation pathway in yeast 2 3 by 4 5 Laura P. Pietikäinen1), M. Tanvir Rahman1), J. Kalervo Hiltunen1), Carol L. Dieckmann2), Alexander J. 6 Kastaniotis1#) 7 8 1)Faculty of Biochemistry and Molecular Medicine and Biocenter Oulu, University of Oulu, PO Box 5400, 9 Oulu FI-90014, Finland. 10 2)Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ 85721, USA 11 12 #)Corresponding author 13 Dr. Alexander J. Kastaniotis 14 email:
[email protected] 15 16 17 18 19 20 21 22 23 24 1 bioRxiv preprint doi: https://doi.org/10.1101/2020.11.24.395780; this version posted November 24, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 25 ABSTRACT 26 Background: Lipoylation of 2-ketoacid dehydrogenases is essential for mitochondrial function in 27 eukaryotes. While the basic principles of the lipoylation processes have been worked out, we still lack a 28 thorough understanding of the details of this important post-translational modification pathway. Here we 29 used yeast as a model organism to characterize substrate usage by the highly conserved eukaryotic 30 octanoyl/lipoyl transferases in vivo and queried how amenable the lipoylation system is to supplementation 31 with exogenous substrate.