What does the quaternary structure of a protein involve?Question 21Select one:a. partial denaturation.b.random coil alternating with α-helixc.the complete three-dimensional conformation.d.The arrangement of two or more polypeptide subunits into a single functional complex.
Question
What does the quaternary structure of a protein involve?Question 21Select one:a. partial denaturation.b.random coil alternating with α-helixc.the complete three-dimensional conformation.d.The arrangement of two or more polypeptide subunits into a single functional complex.
Solution 1
The quaternary structure of a protein involves the arrangement of two or more polypeptide subunits into a single functional complex. This is the highest level of protein structure and is the result of the aggregation of these polypeptide subunits. These subunits may function independently or as a part of the larger complex. The quaternary structure is stabilized by the same types of interactions as the tertiary structure, including hydrogen bonding, disulfide bridges, and hydrophobic interactions. Examples of proteins with a quaternary structure include hemoglobin and DNA polymerase. So, the correct answer is d. The arrangement of two or more polypeptide subunits into a single functional complex.
Solution 2
The quaternary structure of a protein involves the arrangement of two or more polypeptide subunits into a single functional complex. This is the highest level of protein structure and is the result of the aggregation of these polypeptide subunits. These subunits may function individually or they may have a regulatory function when they are part of the larger complex.
Similar Questions
What is not true regarding Quaternary structure of protein a) It involves the clustering of several individual peptide or protein chains into a final specific shape. b) Removing the protein subunits can still maintain functionality of respective subunits c) All type of bonds such as hydrogen bonds, ionic bonds, hydrophobic interactions and disulfide bridges play a role d) Quaternary structure involves assembly of same kind of protein subunits
What is the quaternary structure of a protein?Group of answer choicesIt is 3D arrangement of localized regions of a protein.It is a shape adopted by two or more folded polypeptide chains.It is 3D shape adopted by the entire polypeptide chain.It is the sequence of amino acids joined together by amide bonds.
The arrangement of many polypeptide chains or subunits into a functional, multi-subunit complex defines a protein's quaternary structure. Which of the following statements about the quaternary structure of proteins is accurate? The beta chain direction in a protein's primary structure is the only factor that determines its quaternary structure Regardless of size or purpose, all proteins have their quaternary structure Quaternary structure involves the non-covalent interactions and spatial arrangement of multiple polypeptide chains Quaternary structure is only relevant when it comes to enzymes and has no role in structural/transport proteins
Which of the following are CORRECT about protein structure?P. Secondary structure is formed by a repeating pattern of interactionsamong the polypeptide backbone atomsQ. Tertiary structure is the three-dimensional arrangement of thepolypeptide backbone atoms onlyR. Quaternary structure refers to an assembly of multiple polypeptidesubunits(A) P and Q only(B) P and R only(C) Q and R only(D) P, Q and R
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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