Ubiquitination is an important mechanism through which three classes of enzymes act in concert to target short-lived or abnormal proteins for destruction. The three classes of enzymes involved in ubiquitination are the ubiquitin-activating enzymes (E1s), the ubiquitin-conjugating enzymes (E2s) and the ubiquitin-protein ligases (E3s). RNF25 (RING finger protein 25), also known as AO7, is a 459 amino acid protein that contains one RWD domain and one RING-type zinc finger. Via its RING-type zinc finger (a common domain that contains a conserved cysteine-rich region and is found in a number of viral and eukaryotic proteins), RNF25 is thought to exhibit E2-dependent E3 ubiquitin-protein ligase activity. Specifically, the RING finger of RNF25 interacts with an E2 ligase and, through this interaction, facilitates the ubiquitination of target proteins. RNF25 may also regulate the transcriptional activity of NF-kappa-B, a protein that plays important roles in cell survival, inflammation response, host defense and proliferation.
Function:
E3 ubiquitin-protein ligase that mediates ubiquitination and subsequent proteasomal degradation of NKD2 (By similarity). Stimulates transcription mediated by NF-kappa-B.
Subunit:
Interacts with UBE2D2, and may also interact with UBE2E1 and UBE2E3. Interacts with NKD2 (By similarity). Interacts with RELA.
Subcellular Location:
Ubiquitinated.
Post-translational modifications:
Ubiquitinated (By similarity).
Similarity:
Contains 1 RING-type zinc finger.
Contains 1 RWD domain.
SWISS:
Q96SH1
Gene ID:
6464
Database links:
Entrez Gene: 6464 Human
Entrez Gene: 57751 Mouse
SwissProt: Q96SH1 Human
SwissProt: Q9QZR0 Mouse
Unigene: 471403 Human
Unigene: 280920 Mouse
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