Question

Question: Classify the following proteins as α, β, or α/β:

(a) ${\mathbf{\text{KcsAK}}}^{\mathbf{\text{+}}}$channel (Fig. 10-4)

(b) thioredoxin (Fig. 23-11)

Short answer

1. It is an alpha protein.
2. It is alpha/ beta protein.

Step-by-step solution

Step 1: Function of alpha protein

The AFP's primary function is to transport heavy metal ions and different insoluble compounds, including copper and nickel, fatty acids, bilirubin, and medicines, through the fetus’ blood circulation.

 Classifying the protein  

a) The$KcsA{K}^{+}$ Channel is made up of four identical subunits that form a tetramer. There are two alpha units in each subunit.

Therefore, is an alpha protein.

Classification of thioredoxin protein

b) The alpha/beta protein thioredoxin is an example. Redox reactions are catalyzed.

Hence, thioredoxin is an alpha/beta protein.