What is the Difference Between Peptide and Protein?
🆚 Go to Comparative Table 🆚The main difference between peptides and proteins is their size and structure:
- Peptides are short chains of amino acids, typically consisting of between 2 and 50 amino acids. They have less complex structures compared to proteins.
- Proteins are long molecules made up of multiple peptide subunits, also known as polypeptides. Proteins are composed of 50 or more amino acids and have more complex structures, including secondary, tertiary, and quaternary structures.
Both peptides and proteins are made up of amino acids, but they differ in their biological functions and therapeutic uses. Peptides can perform various biological functions, such as acting as hormones, while proteins play crucial roles in various cellular processes.
In summary, the main differences between peptides and proteins are their size, structure, and biological functions. Peptides are shorter and have simpler structures, while proteins are longer and have more complex structures, allowing them to perform a wider range of functions in the body.
Comparative Table: Peptide vs Protein
The main difference between peptides and proteins is their size and structure. Here is a comparison table highlighting the key differences:
| Feature | Peptides | Proteins |
|---|---|---|
| Amino Acid Range | 2-50 | 50 or more |
| Structure | Less complex, limited to secondary structures | More complex, including secondary, tertiary, and quaternary structures |
| Function | Play key roles in regulating activities of other molecules | Give cells their shape and respond to signals transmitted from the extracellular environment |
| Therapeutic Use | Can be used as therapeutic peptide-based drugs | Can be used as large peptide molecules or comprised of several amino acid chains joined together |
Both peptides and proteins are made up of amino acids held together by peptide bonds. However, proteins are larger and have more complex structures, while peptides are smaller and have simpler structures. Proteins can adopt complex conformations, such as secondary, tertiary, and quaternary structures, whereas peptides tend to have less well-defined structures. Additionally, proteins and peptides can have different functions and therapeutic applications.
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