Characterization of the various Cu(II) and Cd(II) resistance mechanisms in Sphingobium sp. PHE-SPH and Ochrobactrum sp. PHE-OCH, and their potential application in the bioremediation of heavy metal-phenanthrene co-contaminated sites Chen Chen1, Wenrui Lei1, Min Lu1, Chunling Luo2, Yahua Chen1, Zhenguo Shen1* 1 College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, People’s Republic of China 2 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, No. 511 Kehua Street, Tianhe District, Guangzhou 510640, Guangdong Province, China * Corresponding author Email: zgshen@njau.edu.cn Tel: 0086- 025-84396391 Fax: 0086-025-84396391 Online Resource 1 FTIR analysis of Sphingobium sp. PHE-SPH and Ochrobactrum sp. PHE-OCH grown with and without Cu(II) and Cd(II). Bands (cm-1) Control Assignment Functional type References Cells with Heavy metals Cu(II) Cd(II) Sphingobium sp. PHE-SPH 1194 1186 1190 C–N stretching Proteins Mungasavalli et al. (2007) 1242 1242 1244 C=O Stretching Carboxylic acids Comte et al. (2006) 1333 1329 1329 C–H bending 1385 1404 1385 C=O Stretching 1481 1479 1479 C–H bending 1585 1583 1585 N–H bending (Amide II) 2926 2926 2924 C–H stretching Wang & Sun (2013) Carboxylic acids Comte et al. (2006) Poljanšek er al. (2006) Proteins Mungasavalli et al. (2007) Park et al. (2005) Ochrobactrum sp. PHE-OCH 1146 1146 1144 C–O–C stretching Polysaccharides Comte et al. (2006) 1186 1190 1188 C–N stretching Proteins Mungasavalli et al. (2007) 1240 1242 1242 C=O stretching Carboxylic acids Comte et al. (2006) 1348 1350 1348 C–H bending Wang & Sun (2013) 1452 1454 1454 C–H bending (–CH2) Guibaud et al. (2005) 1589 1589 1591 N–H bending (Amide II) Proteins Mungasavalli et al. (2007) References Comte S, Guibaud G, Baudu M. Biosorption properties of extracellular polymeric substances (EPS) resulting from activated sludge according to their type: soluble or bound[J]. Process Biochemistry, 2006, 41(4): 815-823. Guibaud G, Comte S, Bordas F, et al. Comparison of the complexation potential of extracellular polymeric substances (EPS), extracted from activated sludges and produced by pure bacteria strains, for cadmium, lead and nickel[J]. Chemosphere, 2005, 59(5): 629-638. Mungasavalli D P, Viraraghavan T, Jin Y C. Biosorption of chromium from aqueous solutions by pretreated Aspergillus niger: batch and column studies[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2007, 301(1): 214-223. Park D, Yun Y S, Park J M. Studies on hexavalent chromium biosorption by chemically-treated biomass of Ecklonia sp[J]. Chemosphere, 2005, 60(10): 1356-1364. Poljanšek I, Šebenik U, Krajnc M. Characterization of phenol–urea–formaldehyde resin by inline FTIR spectroscopy[J]. Journal of applied polymer science, 2006, 99(5): 2016-2028. Wang T, Sun H. Biosorption of heavy metals from aqueous solution by UV-mutant Bacillus subtilis[J]. Environmental Science and Pollution Research, 2013, 20(10): 7450-7463.