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Which of the following protein structure is missing in a monomeric protein?ans.Quaternary structurePrimary structureTertiary structureSecondary structure Previous Marked for Review Next

Question

Which of the following protein structure is missing in a monomeric protein?ans.Quaternary structurePrimary structureTertiary structureSecondary structure Previous Marked for Review Next

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Solution

The structure that is missing in a monomeric protein is the Quaternary structure.

Here's why:

  1. Primary structure: This is the sequence of amino acids in a protein. All proteins, including monomeric proteins, have a primary structure.

  2. Secondary structure: This refers to the local sub-structures of proteins, such as alpha helices and beta sheets. These are also present in monomeric proteins.

  3. Tertiary structure: This is the overall three-dimensional structure of a protein. Monomeric proteins, like all proteins, have a tertiary structure.

  4. Quaternary structure: This refers to the structure formed by several protein molecules (polypeptide chains), usually called protein subunits, which function as part of the larger assembly or protein complex. Monomeric proteins, by definition, consist of only a single polypeptide chain, so they do not have a quaternary structure.

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