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प्रश्न
Explain denaturation of proteins.
उत्तर
- Denaturation is the process by which the molecular shape of protein changes without breaking the amide/peptide bonds that form the primary structure.
- High temperature, acid, base and even agitation can disrupt the noncovalent interactions responsible for a specific shape of the protein. This is referred to as the denaturation of proteins.
- Denaturation results in disturbing the secondary, tertiary, or quaternary structure of the protein. This causes a change in the properties of protein and the biological activity is often lost.
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संबंधित प्रश्न
Give scientific reasons:
α-Amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.
Draw a neat diagram for the following:
Secondary structure of protein
In the process of denaturation, there is NO change in the structure following protein.
Complete the following reaction.
\[\ce{H2N - CH2 - COOH + H2N - CH2 - CH2 - COOH ->[-H2O] ?}\]
Define peptide bond.
Define enzyme.
Write industrial application of enzyme catalysis.
Explain globular and fibrous proteins with example.
Nucleotide differs from a nucleoside as it has ______
Purine and pyrimidine bases are placed regularly along the DNA molecules at a distance of ______
Read the following statements and select the correct option.
- In quaternary structure, the peptide chains are much looped, twisted, and folded back on themselves due to formation of hydrogen bonds.
- When a protein has more than two polypeptide subunits their arrangement in space is called secondary structure.
Identify the option that correctly describes the amphoteric nature of proteins.
Which of the following contains keratin?
Complete the analogy and select the correct option.
α-helix structure : Keratin :: β-pleated sheet : ____________.
Which of the following amino acids has \[\ce{Me - S - CH2 - CH2 -}\] group in the side chain?
The basic amino acid is ____________.
The molecular weight of hemoglobin is ______ Daltons.
Which among the following amino acids has the lowest molecular mass?
The central dogma of molecular genetics states that the genetic information flows from:
Which of the following statement is not correct?
Define enzymes
Denaturation of proteins leads to loss of their biological activity by:
Which of the following amino acid is basic in nature?
Amino acids in a protein molecule, are linked by a peptide bond. Which of the following correctly shows the reaction of forming peptide bonds?
Define the term Protein.
Write a short note on peptide bond.
Short Answer Question.
Write the Zwitter ion structure of alanine.
Write a short note on peptide bond.
