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Rabbit Anti-p73 alpha/FITC Conjugated antibody
background:
This gene encodes a member of the p53 family of transcription factors involved in cellular responses to stress and development. It maps to a region on chromosome 1p36 that is frequently deleted in neuroblastoma and other tumors, and thought to contain multiple tumor suppressor genes. The demonstration that this gene is monoallelically expressed (likely from the maternal allele), supports the notion that it is a candidate gene for neuroblastoma. Many transcript variants resulting from alternative splicing and/or use of alternate promoters have been found for this gene, but the biological validity and the full-length nature of some variants have not been determined. [provided by RefSeq, Feb 2011].
Function:
Participates in the apoptotic response to DNA damage. Isoforms containing the transactivation domain are pro-apoptotic, isoforms lacking the domain are anti-apoptotic and block the function of p53 and transactivating p73 isoforms. May be a tumor suppressor protein. [COFACTOR] Binds 1 zinc ion per subunit
Subunit:
Found in a complex with p53/TP53 and CABLES1. The SLCterminal oligomerization domain binds to the ABL1 tyrosine kinase SH3 domain. Interacts with HECW2. Isoform Beta interacts homotypically and with p53/TP53, whereas isoform Alpha does not. Isoform Gamma interacts homotypically and with all p73 isoforms. Isoform Delta interacts with isoform Gamma, isoform Alpha, and homotypically. Isoforms Alpha and Beta interact with HIPK2. Isoform Alpha interacts with RANBP9. Isoform Beta interacts with WWOX. Interacts (via SAM domain) with FBXO45 (via B30.2/SPRY domain). Interacts with YAP1 (phosphorylated form). Interacts with HCK (via SH3 domain); this inhibits TP73 activity and degradation.
Subcellular Location:
Nucleus. Cytoplasm. Note=Accumulates in the nucleus in response to DNA damage.
Tissue Specificity:
Expressed in striatal neurons of patients with Huntington disease (at protein level). Brain, kidney, placenta, colon, heart, liver, spleen, skeletal muscle, prostate, thymus and pancreas. Highly expressed in fetal tissue.
Post-translational modifications:
Isoform alpha (but not isoform beta) is sumoylated on Lys-627, which potentiates proteasomal degradation but does not affect transcriptional activity. Phosphorylation by PLK1 and PLK3 inhibits the transcription regulator activity and pro-apoptotic function.
Higher levels of phosphorylation seen in the brain from patients with Huntington disease.
Polyubiquitinated by RCHY1/PIRH2; leading to its degradation by the proteasome.
Similarity:
Belongs to the p53 family.
Contains 1 SAM (sterile alpha motif) domain.
Database links:
Entrez Gene: 7161 Human
Entrez Gene: 22062 Mouse
Entrez Gene: 362675 Rat
Omim: 601990 Human
SwissProt: O15350 Human
SwissProt: Q9JJP2 Mouse
Unigene: 697294 Human
Unigene: 706990 Human
Unigene: 78015 Mouse
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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