The protein encoded by this gene contains a RING finger, which is a motif known to be involved in protein-protein interactions. This protein is a membrane-bound ubiquitin ligase. It can regulate cell motility by targeting paxillin ubiquitination and altering the distribution and localization of paxillin in cytoplasm and cell focal adhesions.
Function:
Has E2-dependent E3 ubiquitin-protein ligase activity. May function together with E2 ubiquitin-conjugating enzymes UBE2D1/UBCH5A and UBE2D2/UBC4. Mediates ubiquitination of PXN/paxillin and Salmonella type III secreted protein sopA. May be involved in regulation of cell motility and localization of PXN/paxillin. Mediates the 'Lys-63'-linked polyubiquitination of JKAMP thereby regulating JKAMP function by decreasing its association with components of the proteasome and ERAD; the ubiquitination appears to involve E2 ubiquitin-conjugating enzyme UBE2N. Mediates the 'Lys-48'-linked polyubiquitination of TMEM173 at 'Lys-150' leading to its proteasomal degradation; the ubiquitination occurrs in mitochondria after viral transfection and regulates antiviral responses.
Subunit:
Interacts with PXN. Interacts with Salmonella typhimurium sopA. Interacts with JKAMP. Interacts with TMEM173; the interaction of endogenous proteins is dependent on viral infection.
Subcellular Location:
Membrane; Multi-pass membrane protein. Mitochondrion membrane. Endoplasmic reticulum membrane. Note=Predominantly located in the plasma membrane, with some localization occurring within cytoplasmic organelles.
Tissue Specificity:
Widely expressed.
Similarity:
Contains 1 RING-type zinc finger.
SWISS:
Q99942
Gene ID:
6048
Database links:
Entrez Gene: 6048 Human
Entrez Gene: 54197 Mouse
Entrez Gene: 407784 Rat
Omim: 602677 Human
SwissProt: Q99942 Human
SwissProt: O35445 Mouse
SwissProt: Q5M807 Rat
Unigene: 718462 Human
Unigene: 274542 Mouse
Unigene: 136937 Rat
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