Specificity
Expressed in all tissues tested with high levels in thymus.
Tag/Conjugate
Unconjugated
SequenceSimilarities
Belongs to the MDM2/MDM4 family.Contains 1 RanBP2-type zinc finger.Contains 1 RING-type zinc finger.Contains 1 SWIB domain.
Alternative Names
Region I is sufficient for binding TP53 and inhibiting its G1 arrest and apoptosis functions. It also binds TP73. Region II contains most of a central acidic region and a putative C4-type zinc finger. The RING finger domain which coordinates two molecules
Storage
Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles. Information available upon request.
Antigen Description
This gene encodes a nuclear protein that contains a p53 binding domain at the N-terminus and a RING finger domain at the C-terminus, and shows structural similarity to p53-binding protein MDM2. Both proteins bind the p53 tumor suppressor protein and inhibit its activity, and have been shown to be overexpressed in a variety of human cancers. However, unlike MDM2 which degrades p53, this protein inhibits p53 by binding its transcriptional activation domain. This protein also interacts with MDM2 protein via the RING finger domain, and inhibits the latters degradation. So this protein can reverse MDM2-targeted degradation of p53, while maintaining suppression of p53 transactivation and apoptotic functions. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Feb 2011]
Function
enzyme binding; protein binding; zinc ion binding;
Synonyms
MDM4; MDM4, p53 regulator; HDMX; MDMX; MRP1; protein Mdm4; protein Mdmx; MDM4 protein variant G; MDM4 protein variant Y; MDM4-related protein 1; mdm2-like p53-binding protein; Mdm4 p53 binding protein homolog; double minute 4, human homolog of; p53-binding protein;
Citations
Publication ()
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