USP53 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Aliases | USP53 , ubiquitin specific peptidase 53 | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | OMIM: 617431; MGI: 2139607; HomoloGene: 34521; GeneCards: USP53; OMA:USP53 - orthologs | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Inactive ubiquitin carboxyl-terminal hydrolase 53 is a protein that in humans is encoded by the USP53 gene. [5]
Although USP53 is classified as a deubiquitinating enzyme based on sequence homology to other proteases from this group, it lacks a functionally essential histidine in the catalytic domaine and activity assays suggest that USP53 is catalytically inactive. [6] [7] [8] Even though USP53 is devoid of catalytic activity, USP53 serves important physiological functions: mutations in Usp53 have been shown to cause progressive hearing loss in mice, [8] as well as late-onset hearing loss and cholestasis in humans. [9] USP53 localizes at cellular tight junctions and interacts with tight junction protein 2 (TJP2). [8] Mutations in TJP2 have also been shown to cause hearing impairments [10] and cholestasis. [11]