1 Electronic Supplementary Material for: Structural diversity and possible functional roles of free fatty acids of the novel soil isolate Streptomyces sp. NP10 Applied Microbiology and Biotechnology Tatjana Ilic-Tomic 1,† , Marija S. Genčić 2,† , Milena Z. Živković 2 , Branka Vasiljevic 1 , Lidija Djokic 1 , Jasmina Nikodinovic-Runic 1 , Niko S. Radulović 2,* 1 Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, P.O. Box 23, 11010 Belgrade, Serbia 2 Department of Chemistry, Faculty of Science and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia Table of Contents: 1. Supplementary Figures S1-S5 2. Supplementary Tables S1-S3 3. (EI) MS spectra of methyl esters of new FAs: i-17:0cy9-10 and a-18:0cy9-10 4. Identification methods of free FAs found in Streptomyces sp. NP10 strain