What is a peptide bond?

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A peptide bond is a covalent bond that forms between two amino acids during protein synthesis. It occurs when the amino group (-NH₂) of one amino acid reacts with the carboxyl group (-COOH) of another amino acid, releasing a molecule of water (H₂O). This process is called dehydration synthesis.

 Example: Formation of a peptide bond in dipeptide:
H₂N-CH(R)-COOH + H₂N-CH(R’)-COOH → H₂N-CH(R)-CO-NH-CH(R’)-COOH + H₂O

 

Related Questions:

  1. Give three examples of unsaturated hydrocarbons.
  2. How can you differentiate ethane from ethene?
  3. What do you mean by dehydration reaction? Give one example.
  4. Draw structural formulas of an alkane, an alkene, and an alkyne containing five carbon atoms.
  5. What is the general formula for alkenes?
  6. How is ethene prepared from ethanol?
  7. What is the main difference between saturated and unsaturated hydrocarbons?
  8. Why are alkynes more reactive than alkanes?
  9. Write a chemical equation to show the preparation of an alkane from an alkene and an alkyne:
  10. Write a chemical equation to show the preparation of ethene from dehydration of an alcohol and dehydrohalogenation of alkyl halides:
  11. Write a chemical equation to show the preparation of ethyne from dehalogenation of 1,2-dihalide and a tetrahalide
  12. Explain why a systematic method of naming chemical compounds is necessary?
  13. Draw electron dot and cross structure for ethene.
  14. What is the effect of adding bromine water to an alkene?
  15. Explain the different types of hydrocarbons and provide examples for each type.
  16. Describe the process of hydrogenation and its industrial applications.
  17. What is the process of combustion in hydrocarbons? Explain complete and incomplete combustion with examples.
  18. How can you convert the following:
  19. List some industrial uses of ethene and ethyne
  20. Hydrocarbons