Anti-USP21 Antibody Picoband® Fluoro488 Conjugated

Ubiquitin carboxyl-terminal hydrolase 21 is a protein that in humans is encoded by the USP21 gene. It is mapped to 1q23.3. This gene encodes a member of the C19 peptidase family, also known as family 2 of ubiquitin carboxy-terminal hydrolases. The encoded protein cleaves ubiquitin from ubiquitinated proteins for recycling in intracellular protein degradation. The encoded protein is also able to release NEDD8, a ubiquitin-like protein, from NEDD8-conjugated proteins. This gene has been referred to as USP16 and USP23 but is now known as USP21. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.

Ubiquitin carboxyl-terminal hydrolase 21; Deubiquitinating enzyme 21; Ubiquitin thioesterase 21; Ubiquitin-specific-processing protease 21; USP21; USP23; PP1490

Cofactors, Vitamins/Minerals, Metabolism, Mitochondrial, Mitochondrial Markers, Mitochondrial Metabolism, Pathways and Processes, Signal Transduction, Vitamins/Minerals

Deubiquitinates histone H2A, a specific tag for epigenetic transcriptional repression, thereby acting as a coactivator. Deubiquitination of histone H2A releaves the repression of di- and trimethylation of histone H3 at 'Lys-4', resulting in regulation of transcriptional initiation. Regulates gene expression via histone H2A deubiquitination. Also capable of removing NEDD8 from NEDD8 conjugates but has no effect on Sentrin-1 conjugates. Deubiquitinates BAZ2A/TIP5 leading to its stabilization.

1. Nakagawa, T., Kajitani, T., Togo, S., Masuko, N., Ohdan, H., Hishikawa, Y., Koji, T., Matsuyama, T., Ikura, T., Muramatsu, M., Ito, T. Deubiquitylation of histone H2A activates transcriptional initiation via trans-histone cross-talk with H3K4 di- and trimethylation. Genes Dev. 22: 37-49, 2008. 2. Smith, T. S., Southan, C. Sequencing, tissue distribution and chromosomal assignment of a novel ubiquitin-specific protease USP23. Biochim. Biophys. Acta 1490: 184-188, 2000. 3. Xu, G., Tan, X., Wang, H., Sun, W., Shi, Y., Burlingame, S., Gu, X., Cao, G., Zhang, T., Qin, J., Yang, J. Ubiquitin-specific peptidase 21 inhibits tumor necrosis factor alpha-induced nuclear factor kappa-B activation via binding to and deubiquitinating receptor-interacting protein 1. J. Biol. Chem. 285: 969-978, 2010.