Met - Enkephalin is an endogenous opioid neuropeptide composed of five amino acids (Tyr - Gly - Gly - Phe - Met), naturally produced in the central nervous system. It acts as a ligand for μ and δ opioid receptors, mediating analgesia, mood regulation, and reward pathways. This peptide plays a critical role in pain perception, stress responses, and gastrointestinal motility. In pharmacological research, Met - Enkephalin serves as a foundational tool to study opioid receptor activation mechanisms, structure - activity relationships, and the development of analgesic and anti - addiction therapies. Its natural origin and high affinity for opioid receptors underscore its significance in understanding endogenous pain modulation and psychiatric disorders.

Chemical Formula: C27H35N5O7S

Molecular Weight: 573.67

Sequence: Tyr-Gly-Gly-Phe-Met

Purity: From crude to 98%

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