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USP22

Function

Histone deubiquitinating component of the transcription regulatory histone acetylation (HAT) complex SAGA. Catalyzes the deubiquitination of both histones H2A and H2B, thereby acting as a coactivator. Recruited to specific gene promoters by activators such as MYC, where it is required for transcription. Required for nuclear receptor-mediated transactivation and cell cycle progression.

Sequence similarities

Belongs to the peptidase C19 family. UBP8 subfamily.

Tissue specificity

Moderately expressed in various tissues including heart and skeletal muscle, and weakly expressed in lung and liver.

Cellular localization

  • Nucleus

Alternative names

  • Ubiquitin carboxyl-terminal hydrolase 22
  • Deubiquitinating enzyme 22
  • Ubiquitin thioesterase 22
  • Ubiquitin-specific-processing protease 22
  • USP22
  • USP3L
  • KIAA1063

Target type

Proteins

Primary research area

Epigenetics

Molecular weight

59961Da