Anosmin-1

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Anosmin-1 is a protein found in humans and other organisms which is responsible for normal development. Absence or damage to the protein results in Kallmann syndrome in humans, which is characterized by loss of olfactory bulbs and GnRH secretion leading to anosmia and hypothalamic hypogonadotropic hypogonadism. Anosmin-1 is coded by the KAL-1 gene, which is found on the X chromosome. Anosmin-1 is 100 kilodaltons and is expressed on the outside of cells. Because of this and because of its contribution to normal migration of nerve cells, a role in the extracellular matrix has been postulated.

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