Without SDS, different proteins with similar molecular weights would migrate differently due to differences in mass-charge ratio, as each protein has an isoelectric point and molecular weight particular to its primary structure.
Sen SDS, diferentes proteínas con pesos moleculares similares migrarían de forma diferente debido a diferenzas na proporción masa-carga, xa que cada proteína ten un punto isoeléctrico e un peso molecular particular segundo a súa estrutura primaria.