Supporting Information Effect of Salts from the Hofmeister Series on Conformational Stability, Aggregation Propensity, and Local Flexibility of an IgG1 Monoclonal Antibody Ranajoy Majumdar 1† , Prakash Manikwar 1† , John M. Hickey 1 , Hardeep S. Samra 2 , Hasige A. Sathish 2 , Steven M. Bishop 2 , C. Russell Middaugh 1 , David B. Volkin 1* , David D. Weis 3* 1 Department of Pharmaceutical Chemistry, Macromolecule and Vaccine Stabilization Center, University of Kansas, Lawrence, KS 66047 2 Department of Formulation Sciences, MedImmune, One MedImmune Way, Gaithersburg, MD 20878 3 Department of Chemistry and R. N. Adams Institute for Bioanalytical Chemistry, University of Kansas, Lawrence, KS 66045 1