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Chapter 21: 21-47P (page 1024)

Which would have the greatest percentage of polar amino acids, a spherical protein, a cigar-shaped protein, or a subunit of a hexamer? b. Which would have the smallest percentage of polar amino acids?

Short Answer

Expert verified
  1. A cigar-shaped protein.
  2. A subunit of a hexamer.

Step by step solution

01

Shape of protein

A protein has polar groups on its surface and non-polar groups inside the protein fold.

02

Surface area to volume ratio

A cigar-shaped protein has the maximum surface area to volume ratio. Therefore, it has the greatest percentage of polar amino acids.

03

Position of non-polar amino acids

In a subunit of a hexamer, the non-polar part is on the surface of the protein. Therefore, it has the smallest percentage of polar amino acids.

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