residues would most likely be buried in the interior of a water soluble, globular protein? What is the advantage of adding SDS to gel electrophoresis?...

Which of the following amino acid residues would most likely be buried in the interior of a water soluble, globular protein? What is the advantage of adding SDS to gel electrophoresis? A. B. C. D. E. SDS allows proteins to be separated on the basis of approximate mass.