USP9Y | ||||||
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Aliases | USP9Y, DFFRY, SPGFY2, ubiquitin specific peptidase 9, Y-linked | |||||
External IDs | MGI: 1313274 HomoloGene: 68408 GeneCards: USP9Y | |||||
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Species | Human | Mouse | ||||
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Location (UCSC) | Chr Y: 12.7 – 12.86 Mb | Chr Y: 1.3 – 1.46 Mb | ||||
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Ubiquitin specific peptidase 9, Y-linked (fat facets-like, Drosophila), also known as USP9Y, is an enzyme which in humans is encoded by the USP9Y gene. It is required for sperm production. This enzyme is a member of the peptidase C19 family and is similar to ubiquitin-specific proteases, which cleave the ubiquitin moiety from ubiquitin-fused precursors and ubiquitinylated proteins.
Mutations in this gene have been associated with Sertoli cell-only syndrome (SCO) and male infertility.
The USP9Y gene is found on the azoospermia factor (AZF) region on the Y chromosome. Men who have impaired or no sperm production often have a deletion in the AZF region, especially in the USP9Y gene, and it was thought that USP9Y was necessary for sperm production. However, a man and his father with a USP9Y deletion who could produce sperm were recently reported. The corresponding gene is present but inactive in chimpanzees and bonobos.