UBE3A, CT (Ubiquitin-protein Ligase E3A, E6AP Ubiquitin-protein Ligase, Oncogenic Protein-associated Protein E6-AP, Human Papillomavirus E6-associated Protein, Renal Carcinoma Antigen NY-REN-54, E6AP, EPVE6AP, HPVE6A) (AP)

UBE3A interacts with the E6 protein of the cancer-associated human papillomavirus types 16 and 18. The E6/E6-AP complex binds to and targets the p53 tumor-suppressor protein for ubiquitin-mediated proteolysis. It is an E3 ubiquitin-protein ligase which accepts ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. It can target itself for ubiquitination in vitro and efficiently promotes its own degradation in vivo. It appears that only unmodified E6-AP molecules can bind efficiently to p53 in the presence of the HPV E6 oncoprotein. UBE3A binds UBQLN1 and UBQLN2. Defects in UBE3A are a cause of Angelman syndrome (AS) [MIM:105830]; also known as 'happy puppet syndrome'. AS is characterized by features of severe motor and intellectual retardation, microcephaly, ataxia, frequent jerky limb movements and flapping of the arms and hands, hypotonia, hyperactivity, hypopigmentation, seizures, absence of speech, frequent smiling and episodes of paroxysmal laughter, and an unusual facies characterized by macrostomia, a large mandible and open-mouthed expression, a great propensity for protruding the tongue ('tongue thrusting'), and an occipital groove. UBE3A contains 1 HECT-type E3 ubiquitin-protein ligase domain.\n\nApplications: \nSuitable for use in ELISA, Western Blot and Immunohistochemistry. Other applications not tested.\n\nRecommended Dilutions:\nELISA: 1:1000\nWestern Blot: 1:100-1:500\nImmunohistochemistry: 1:50-1:100\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Do not freeze alkaline phosphatase conjugates which could result in a substantial loss of enzymatic activity. Light sensitive. Aliquots are stable for at least 6 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

E0015-04F-AP

Size

200ul

Applications

ELISA, IHC, WB

Hosts

Rabbit

Reactivities

Hum

Form

Supplied as a liquid in PBS, pH 7.2. Contains ~0.09% sodium azide. Conjugated to Alkaline Phosphatase.

P Type

Pab

Purity

Purified by Protein G affinity chromatography.

Isotype

IgG

References

1. Be, X., et al., Biochemistry 40(5):1293-1299 (2001). 2. Kleijnen, M.F., et al., Mol. Cell 6(2):409-419 (2000). 3. Huang, L., et al., Science 286(5443):1321-1326 (1999). 4. Nuber, U., et al., Eur. J. Biochem. 254(3):643-649 (1998). 5. Malzac, P., et al., Am. J. Hum. Genet. 62(6):1353-1360 (1998).

Additional Info

Recognizes human UBE3A.