Short-stature homeobox gene
Lua error in Module:Infobox_gene at line 53: attempt to index field 'wikibase' (a nil value). The short-stature homeobox gene (SHOX), also known as short-stature-homeobox-containing gene, is a gene located on both the X and Y chromosomes, which is associated with short stature in humans if mutated or present in only one copy (haploinsufficiency).
Pathology
[edit | edit source]SHOX was first found during a search for the cause of short stature in women with Turner syndrome, where there is loss of genetic material from the X chromosome, typically by loss of one entire X chromosome.[1]
Since its discovery, the gene has been found to play a role in idiopathic short stature, Léri-Weill dyschondrosteosis, and Langer mesomelic dysplasia.
Gene dosage effects of extra copies of SHOX may be a cause of the increased stature seen in other sex chromosome aneuploidy conditions such as triple X, XYY, Klinefelter, XXYY and similar syndromes.[2]
Genetics and function
[edit | edit source]SHOX is composed of 6 different exons and is located in the pseudoautosomal region 1 (PAR1) of the X chromosome (Xp22.33) and Y chromosome.[1] Since genes in PAR escape X inactivation, their dosage changes with sex chromosome aneuploidies such as Turner.[3]
Similar genes are present in a variety of animals and insects.
It is a homeobox gene, meaning that it helps to regulate development.
References
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Further reading
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External links
[edit | edit source]- short+stature+homeobox+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- GeneReview/NCBI/NIH/UW entry on SHOX-Related Haploinsufficiency Disorders