Carnosine

Carnosine

Chemical structure of carnosine

Carnosine is a dipeptide molecule composed of the amino acids beta-alanine and histidine. It is highly concentrated in muscle and brain tissues.

Structure and Properties

Carnosine is a dipeptide with the chemical formula C_H__N_O_. It is formed by the condensation of beta-alanine and histidine. The presence of the imidazole ring in histidine contributes to its ability to act as a buffer in muscle tissues, helping to maintain the pH during high-intensity exercise.

Biological Functions

Carnosine is known for its role as an antioxidant, protecting cells from oxidative stress. It also has anti-glycation properties, which means it can prevent the formation of advanced glycation end-products (AGEs) that are implicated in aging and various diseases.

Muscle Function

In muscle tissues, carnosine acts as a buffer to maintain the pH balance during anaerobic conditions, such as intense exercise. This buffering capacity helps delay the onset of muscle fatigue.

Brain Health

Carnosine is also found in the brain, where it is thought to protect against neurodegenerative diseases by reducing oxidative stress and inhibiting the aggregation of beta-amyloid proteins.

Dietary Sources

Carnosine is found in high concentrations in meat, particularly in beef, pork, and chicken. It is not typically found in plant-based foods, which is why vegetarians and vegans may have lower levels of carnosine in their bodies.

Supplementation

Carnosine supplements are available and are often used by athletes to enhance performance and by individuals seeking to slow the aging process. The effectiveness of supplementation can vary, and it is often combined with beta-alanine supplements to increase carnosine levels in muscle tissues.

Related Pages

• Dipeptide
• Beta-alanine
• Histidine
• Antioxidant
• Muscle fatigue