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What type of protein structure involves multiple polypeptide chains?

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Question: What type of protein structure involves multiple polypeptide chains?

Options:

  1. Primary structure
  2. Secondary structure
  3. Tertiary structure
  4. Quaternary structure

Correct Answer: Quaternary structure

Solution: 

The quaternary structure of a protein is formed when two or more polypeptide chains assemble into a functional protein complex.

What type of protein structure involves multiple polypeptide chains?

Practice Questions

Q1
What type of protein structure involves multiple polypeptide chains?
  1. Primary structure
  2. Secondary structure
  3. Tertiary structure
  4. Quaternary structure

Questions & Step-by-Step Solutions

What type of protein structure involves multiple polypeptide chains?
Correct Answer: Quaternary structure
  • Step 1: Understand that proteins are made up of smaller units called polypeptides.
  • Step 2: Know that a polypeptide is a chain of amino acids linked together.
  • Step 3: Learn that proteins can have different levels of structure: primary, secondary, tertiary, and quaternary.
  • Step 4: Identify that the quaternary structure is the highest level of protein structure.
  • Step 5: Realize that the quaternary structure is formed when two or more polypeptide chains come together.
  • Step 6: Conclude that the type of protein structure involving multiple polypeptide chains is called the quaternary structure.
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