Answer to Question #11129 in Biochemistry for Maria
Explain the effect of increasing and decreasing the pH on the electrophoresis process
Electrophoresis is a method for separating substancesaccording to their charge. Proteins, nucleic acids and other biomolecules have different charged groups (such as -NH3[+], -PO4[2-], -SO3[-]) that led to a movement of biomolecules in the electric field. Changes in solution pH result in changes of charge of the biomolecules, because of this results of electrophoresis will be different in different pH. I.e. if we increase solution pH, -NH3+ groups loose their charge and turn to -NH2 groups, thus a molecule will decrease its charge and will move slower during electrophoresis. On the contrary -SO3 groups are uncharged in the low pH, but obtain negative charge in the high pH (thus molecule with large amount of -SO3 groups will move during electrophoresis only in solutions with high pH).
I would like to thank the experts from the bottom of my heart. You saved me when no one else could. Perfect grades on all of the assignments! I do not know how to say thank you enough! You had everything done in less than 12 hours. It's just amazing!