Proopiomelanocortin
(Redirected from Pro-opiomelanocortin)
Proopiomelanocortin (POMC) is a precursor polypeptide with 241 amino acid residues. It is synthesized in the pituitary gland, hypothalamus, and skin. POMC is the source of several important biologically active substances. These include adrenocorticotropic hormone (ACTH), melanocyte-stimulating hormone (MSH), and beta-endorphin.
Structure and Function[edit | edit source]
POMC is a large protein that is cut into several smaller pieces by enzymes. These smaller pieces each have different functions in the body. For example, ACTH stimulates the adrenal glands to produce hormones such as cortisol. MSH is involved in the production of melanin, the pigment that gives skin, hair, and eyes their color. Beta-endorphin is a type of endorphin that acts as a natural painkiller in the body.
Clinical Significance[edit | edit source]
Mutations in the POMC gene can lead to a variety of medical conditions. These include obesity, red hair color and pale skin, Addison's disease, and certain forms of congenital adrenal hyperplasia. In addition, POMC and its derivatives have been implicated in mood disorders such as depression and anxiety.
Research Directions[edit | edit source]
Research is ongoing to better understand the role of POMC and its derivatives in health and disease. This includes studies to investigate the potential use of POMC derivatives as therapeutic agents in conditions such as obesity, chronic pain, and mood disorders.
See Also[edit | edit source]
- Adrenocorticotropic hormone
- Melanocyte-stimulating hormone
- Beta-endorphin
- Obesity
- Addison's disease
- Congenital adrenal hyperplasia
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