The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Application notesWB: Use at a concentration of 1-5 µg/ml.
This antibody has only been tested in WB against the recombinant fragment used as immunogen. We have no data on the detection of endogenous protein.
Not yet tested in other applications. Optimal dilutions/concentrations should be determined by the end user.
FunctionMay function as a ubiquitin-protein or polyubiquitin hydrolase involved both in the processing of ubiquitin precursors and of ubiquitinated proteins. May therefore play an important role regulatory role at the level of protein turnover by preventing degradation of proteins through the removal of conjugated ubiquitin. Essential component of TGF-beta/BMP signaling cascade. Deubiquitinates monoubiquitinated SMAD4, opposing the activity of E3 ubiquitin-protein ligase TRIM33. Monoubiquitination of SMAD4 hampers its ability to form a stable complex with activated SMAD2/3 resulting in inhibition of TGF-beta/BMP signaling cascade. Deubiqitination of SMAD4 by USP9X re-empowers its competence to mediate TGF-beta signaling.
Tissue specificityWidely expressed in embryonic and adult tissues.
Involvement in diseaseNote=USP9Y is located in the 'azoospermia factor a' (AZFa) region on chromosome Y which is deleted in Sertoli cell-only syndrome. This is an infertility disorder in which no germ cells are visible in seminiferous tubules leading to azoospermia. However AZFa deletions resulting in complete loss of USP9Y have been also found in normospermic men (PubMed:19246359). Defects in USP9Y might be a cause of spermatogenic failure non-obstructive Y-linked (SFNOY) [MIM:415000]. It is a disorder resulting in the absence (azoospermia) or reduction (oligozoospermia) of sperm in the semen, leading to male infertility. Note=The role of USP9Y in spermatogenesis failure is uncertain. A 4-bp deletion in a splice-donor site, causing exon skipping and protein truncation has been observed in non-obstructive azoospermia (PubMed:10581029). However complete USP9Y deletion has been detected in individuals with no spermatogenic defects (PubMed:19246359).
Sequence similaritiesBelongs to the peptidase C19 family.