Peptide Hormones

Definition

Peptide hormones are short chains of amino acids that serve as signaling molecules in the body, helping to regulate various physiological processes including metabolism, growth, and appetite.

Scientific / Technical Definition

Peptide hormones consist of chains of amino acids that bind to receptors on the surface of target cells, initiating intracellular signaling pathways. These hormones are synthesized in the ribosomes of cells and are crucial for numerous biological functions, such as regulating glucose levels (e.g., insulin) or stimulating growth (e.g., growth hormone).

Benefits

• Helps regulate metabolism.
• Supports growth and development.
• Assists in appetite control.
• Plays a role in stress response and immune function.

Examples

• Insulin
• Glucagon
• Growth Hormone
• Ghrelin

Additional Information

• Importance: Peptide hormones are crucial for maintaining homeostasis and overall hormonal balance in the body, influencing many systems including the endocrine and nervous systems.

Related Terms

• Amino Acids
• Hormones
• Protein Synthesis
• Endocrinology

References

• Overview of Peptide Hormones
• Role of Peptide Hormones in Metabolism