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Follicle stimulating hormone

glycoprotein hormones, alpha polypeptide
Identifiers
Symbol CGA
Entrez 1081
HUGO 1885
OMIM 118850
RefSeq NM_000735
UniProt P01215
Other data
Locus Chr. 6 q14-q21
follicle stimulating hormone, beta polypeptide
Follitropine.gif
Follicle-stimulating hormone
Identifiers
Symbol FSHB
Entrez 2488
HUGO 3964
OMIM 136530
RefSeq NM_000510
UniProt P01225
Other data
Locus Chr. 11 p13

Follicle-stimulating hormone (FSH) is a gonadotropin, a glycoprotein polypeptide hormone. FSH is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland, and regulates the development, growth, pubertal maturation, and reproductive processes of the body. FSH and luteinizing hormone (LH) work together in the reproductive system.

FSH is a 35.5 kDa glycoprotein heterodimer, consisting of two polypeptide units, alpha and beta. Its structure is similar to those of luteinizing hormone (LH), thyroid-stimulating hormone (TSH), and human chorionic gonadotropin (hCG). The alpha subunits of the glycoproteins LH, FSH, TSH, and hCG are identical and consist of about 96 amino acids, while the beta subunits vary. Both subunits are required for biological activity. FSH has a beta subunit of 111 amino acids (FSH β), which confers its specific biologic action, and is responsible for interaction with the follicle-stimulating hormone receptor. The sugar portion of the hormone is covalently bonded to asparagine, and is composed of N-acetylgalactosamine, mannose, N-acetylglucosamine, galactose, and sialic acid.


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