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The secondary structure of protein:

  • the ordered 3-d arrangements in localized area of a polypeptide chain
  • interactions of the peptide backbone (s-trans and planar)
  • example of secondary structure : alpha-helix and beta-pleated sheet
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What level of protein structure is represented by the coiling of the protein chain backbone into an alpha helix?

The coiling of the protein chain backbone into an alpha helix represents the secondary structure of a protein. This structure is stabilized by hydrogen bonds between the amino acid residues in the protein chain, forming a corkscrew-like structure.


Does the secondary structure of a protein involve only the sequence of amino acids found in that protein?

While it is possible to predict likely secondary structures of a protein from its primary structure, only knowing the secondary structure, the general 3-D shape of local areas of the protein, cannot yield the primary structure.


Why protein is called primary structure?

Proteins *have* primary, secondary, tertiary, and quarternary structures. The primary structure is simply the chain of amino acids without any other structure. Secondary structure results from folding of the chain to form rudimentary structures such as alpha helices, beta sheets and turns. Tertiary structure results from the further folding of the protein with secondary structures into different 3D shapes by interactions between different parts of the secondary structure. Quarternary structure results from different proteins with tertiary structures coming together to form a protein complex.


What does the secondary structure of a protein result from?

The secondary structure of a protein results from the hydrogen bonding interactions between amino acids in the polypeptide chain. These interactions form regular folding patterns, such as alpha helices and beta sheets, that stabilize the structure of the protein.


Which levels of structural organization are lost when a protein is denatured?

When a protein is denatured, it typically loses its secondary, tertiary, and quaternary structures. This results in the disruption of its folded conformation and can lead to loss of function. The primary structure (sequence of amino acids) usually remains intact unless extreme denaturing conditions are applied.

Related Questions

What elements of protein secondary structure are present in this structure?

The protein structure contains both alpha helices and beta sheets, which are the two main elements of protein secondary structure.


What level of protein structure is represented by the coiling of the protein chain backbone into an alpha helix?

The coiling of the protein chain backbone into an alpha helix represents the secondary structure of a protein. This structure is stabilized by hydrogen bonds between the amino acid residues in the protein chain, forming a corkscrew-like structure.


What level of protein structure is a spatial arrangement of the secondary structure?

Tertiary structure. It refers to the three-dimensional arrangement of the secondary structure elements (alpha helices and beta sheets) in a protein.


Differentiate the four types of protein structure?

Primary structure: The linear sequence of amino acids in a protein. Secondary structure: Local folding patterns such as alpha helices and beta sheets. Tertiary structure: Overall 3D shape of a single protein molecule. Quaternary structure: Arrangement of multiple protein subunits in a complex.


What is the coiling or sheetlike structure of a protein called?

It is called secondary structure of proteins .


What are the subgroups of protein?

There are four distinct levels of protein structure. The main two are primary, amino acid, secondary structure, and quaternary structure.


What role does the secondary protein structure play in determining the overall function of a protein?

The secondary protein structure, such as alpha helices and beta sheets, helps determine the overall shape and stability of a protein. This structure is important for the protein to carry out its specific function, as it influences how the protein interacts with other molecules and performs its biological tasks.


The alpha helix and beta pleated sheet represent which level of protein structure?

The alpha helix and beta pleated sheet represent the secondary structure of proteins. Both structures are formed by the interaction of amino acids within the polypeptide chain through hydrogen bonding.


What are the four levels of protein structure?

The four levels of protein structure are primary (sequence of amino acids), secondary (local folding patterns like alpha helices and beta sheets), tertiary (overall 3D structure of the protein), and quaternary (arrangement of multiple protein subunits).


Does the secondary structure of a protein involve only the sequence of amino acids found in that protein?

While it is possible to predict likely secondary structures of a protein from its primary structure, only knowing the secondary structure, the general 3-D shape of local areas of the protein, cannot yield the primary structure.


The alpha helix and pleated sheet are examples of?

secondary protein structures formed by hydrogen bonds between the amino acids in a protein chain. They play a crucial role in determining the overall structure and function of proteins.


What causes the secondary structure of protein to differ in length from the primary?

The primary structure is a one or two dimensional structure, whereas the secondary structure is a three dimensional structure in which different parts of the protein molecule bend and twist due to the formation of hydrogen bonds between atoms. This makes the secondary structure shorter than the primary structure.