Hemoglobin is a protein composed of two pairs of polypeptide chains. What is the highest level of protein structure represented by hemoglobin?

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19-01-2022
Biology

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Hemoglobin is a protein composed of two pairs of polypeptide chains. What is the highest level of protein structure represented by hemoglobin?

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solime solime · Answer 1 · 2022-01-19T00:23:03+01:00

The highest level of protein structure represented by haemoglobin is the quaternary protein structure.

This is because haemoglobin is composed of two polypeptide chains.

Brief summary of the protein structures:

PRIMARY: Amino acid sequence

SECONDARY: Folding of polypeptide into either an a-helix shape or b-pleated sheet shape

TERTIARY: Further folding of the polypeptide into a complex 3-D structure

QUATERNARY: Combination of two or more polypeptide chains

*From which the description of haemoglobin falls under the quaternary protein structure.