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Chapter 13: Problem 11

Hemoglobin is a tetramer consisting of two \(\alpha\) and two \(\beta\) chains. What level of protein structure is described in this statement?

Short Answer

Expert verified
Answer: Quaternary structure.

Step by step solution

01

There are four levels of protein structure: primary, secondary, tertiary, and quaternary. The primary structure is the sequence of amino acids in the polypeptide chain, the secondary structure refers to local folding patterns such as alpha-helices and beta-sheets, the tertiary structure is the overall three-dimensional folding of a single polypeptide chain, and the quaternary structure is the arrangement of multiple polypeptide chains in a protein complex, such as a dimer or a tetramer. #step 2: Identify the level of protein structure described in the statement#

The statement given describes hemoglobin as a tetramer, which consists of two α and two β chains. This refers to the arrangement of multiple polypeptide chains in the protein complex. Hence, the statement describes the quaternary structure of hemoglobin.

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