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Two types of bond formation takes place in a secondary protein:
1. peptide bond due to amides
2. hydrogen bond
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Some regions of a polypeptide may coil or fold back on themselves?
secondary structure ,hydrogen bonds
what is The helix that forms in a protein chain as a result of hydrogen bonds and other weak forces is an example of?
Secondary Structure of protein
What are some important factors in enzyme structure?
Enzymes are almost all proteins. They are often globular proteins. We can describe them in terms of their primary, secondary, tertiary and quaternary structure. They are long chains of amino acid units held together by peptide bonds, looped and folded into secondary and tertiary structures by disulfide bonds, hydrophobic interactions, and salt bridges.
Is proteins being made from amino acids a chemical change?
Yup. Amino acids are chemically bonded together. That's a chemical change. There are also other non-chemical bonds that form the secondary, tertiary and quarternary structure of proteins...
What is distinctive about primary vs secondary protein structure?
The primary structure of a protein is just an amino acid string; a polypeptide. The secondary structure of a protein is the hydrogen bonding of the side chains that form the polypeptide chain into alpha helices and beta sheets.
What chemical bonds shape secondary protein structure?
The bonds are covalent.
What level of protein structure is a spatial arrangement of the secondary structure?
hydrogen bonds
Name two types of secondary protein structure Explain the role of hydrogen bonds in maintaining secondary structure?
alpha Helix and Beta pleated sheet
What aspect of protein structure are stabilized or assisted by hydrogen bonds?
secondary, tertiary, and quaternary structures, but not primary structure
Differentiate between secondary and tertiary structure by describing the parts of the polypeptide chain that participates in the bonds that hold together each level of structure?
Secondary tertiary is the R groups interactions that are ionic. The polypeptide chain also has disulfide bond, and hydrophobic interactions.
What bonds hold the secondary structure of protein together?
regularly spaced hydrogen bondings
Hydrogen bonds between different parts of the polypeptide chain result in which level of protein structure?
Tertiary structure
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.
Some regions of a polypeptide may coil or fold back on themselves?
secondary structure ,hydrogen bonds
Describe the two types of secondary protein structure and explain the role of hydrogen bonds in maintaining the structure?
One secondary structure, α helix, is a delicate coil held together by hydrogen bonds every 4th amino acid. A structure with α helix is keratin, the material the human body uses to produce hair. The other secondary structure is β pleated sheet. In this one, two or more strands of β strands are connected by hydrogen bonds between parts of two parallel polypeptide backbones. This secondary structure is what spider webs are made of, and the hydrogen bonding makes it stronger than a strand of steel of the same weight. These secondary structures are unable to be formed without hydrogen bonding.
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 is secondary called secondary?
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.
