INHBA

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Template:Short description Template:Cs1 config An Error has occurred retrieving Wikidata item for infobox Inhibin, beta A, also known as INHBA, is a protein which in humans is encoded by the INHBA gene.[1] INHBA is a subunit of both activin and inhibin, two closely related glycoproteins with opposing biological effects.

Function

The inhibin beta A subunit joins the alpha subunit to form a pituitary FSH secretion inhibitor. Inhibin has been shown to regulate gonadal stromal cell proliferation negatively and to have tumor-suppressor activity. In addition, serum levels of inhibin have been shown to reflect the size of granulosa-cell tumors and can therefore be used as a marker for primary as well as recurrent disease. Because expression in gonadal and various extragonadal tissues may vary several fold in a tissue-specific fashion, it is proposed that inhibin may be both a growth/differentiation factor and a hormone. Furthermore, the beta A subunit forms a homodimer, activin A, and also joins with a beta B subunit to form a heterodimer, activin AB, both of which stimulate FSH secretion. Finally, it has been shown that the beta A subunit mRNA is identical to the erythroid differentiation factor subunit mRNA and that only one gene for this mRNA exists in the human genome.[2]

Interactions

INHBA has been shown to interact with ACVR2A.[3][4]

References

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  1. ^ Page Module:Citation/CS1/styles.css has no content.Burger HG, Igarashi M (April 1988). "Inhibin: definition and nomenclature, including related substances". Endocrinology. 122 (4): 1701–2. doi:10.1210/endo-122-4-1701. PMID 3345731.
  2. ^ Page Module:Citation/CS1/styles.css has no content."Entrez Gene: INHBA inhibin, beta A (activin A, activin AB alpha polypeptide)".
  3. ^ Page Module:Citation/CS1/styles.css has no content.Lewis KA, Gray P C, Blount A L, MacConell L A, Wiater E, Bilezikjian L M, Vale W (March 2000). "Betaglycan binds inhibin and can mediate functional antagonism of activin signalling". Nature. 404 (6776). ENGLAND: 411–4. Bibcode:2000Natur.404..411L. doi:10.1038/35006129. ISSN 0028-0836. PMID 10746731. S2CID 4393629.
  4. ^ Page Module:Citation/CS1/styles.css has no content.Martens JW, de Winter J P, Timmerman M A, McLuskey A, van Schaik R H, Themmen A P, de Jong F H (July 1997). "Inhibin interferes with activin signaling at the level of the activin receptor complex in Chinese hamster ovary cells" (PDF). Endocrinology. 138 (7). UNITED STATES: 2928–36. doi:10.1210/endo.138.7.5250. ISSN 0013-7227. PMID 9202237.

Further reading

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