Final answer:
Sodium channels have beta subunits as auxiliary subunits that modify gating properties and assist in trafficking and expression. Potassium channels have various auxiliary subunits like Kvβ and MiRP that modulate gating and affect expression and function.
Step-by-step explanation:
On sodium and potassium channels, there are auxiliary subunits that play important roles in their function. For sodium channels, the auxiliary subunits include beta subunits, which help modify the gating properties of the channel. These beta subunits also play a role in the trafficking and expression of the sodium channels.
On the other hand, potassium channels have different types of auxiliary subunits. For example, the Kvβ subunit modulates the gating properties of certain potassium channels, while other subunits like the MinK-related peptide (MiRP) subunits can affect the expression and function of other types of potassium channels.