these methods were based on solubilizing protein in sodium dodecyl sulfate ( sds ) such that the intrinsic charge differences between proteins were overwhelmed by the relatively strong charge of the dodecyl sulfate ion , which resulted in very good correlation ( for most , but not all , proteins ) between electrophoretic mobility and molecular weight ( see chapter 6 in vol . 1 of this series ) .
C0037506
sodium dodecyl sulfate
C0058632
dodecyl sulfate ion