You have a mixture of three amino acids : E(pI = 3.2), Y(pI = 5.7) & K(pI = 9.7). Under electro - phoresis at pH = 7.7, in which direction will each component of the mixture move ?

Options

A. E to anode, Y & K to cathode
B. E to anode, Y stationery, K to cathode
C. E to cathode, Y stationery, K to anode
D. E & Y to anode , K to cathode

Answer

D

Explanation

For E nad Y PI `lt` PH exist as move to anode and for K, PI `gt` PH, exist as cation move towards cathode.