TP53 (Ab-9) Antibody

Datasheet
Code CSB-PA599282
Product Type Polyclonal Antibody
Former Code(s) CSB-PA779969
Size US$297
Uniprot No. P04637
Image
  • Western blot analysis of extracts from 293, HT29 and MDA cells using p53(Ab-9) Antibody.
Protocols ELISA Protocol
Western Blotting(WB) Protocol
Immunogen Peptide sequence around aa.7~11 (D-P-S-V-E) derived from Human p53.
Raised in Rabbit
Species Reactivity Human
Specificity The antibody detects endogenous level of total p53 protein.
Tested Applications ELISA,WB;WB:1:500-1:1000
Relevance

p53 is a nuclear protein which plays an essential role in the regulation of cell cycle specifically in the transition from G0 to G1. It is found in very low levels in normal cells however in a variety of transformed cell lines in high amounts and believed to contribute to transformation and malignancy. The open reading frame of p53 is 393 amino acids long, with the central region (consisting of amino acids from about 100 to 300) containing the DNA-binding domain. This proteolysis-resistant core is flanked by a C-terminal end mediating oligomerization and an N-terminal end containing a strong transcription activation signal. p53 binds as a tetramer to a PBS (p53-Binding Site) and activates the expression of downstream genes that inhibit growth and/or invasion. p53 binds as a tetramer to a p53-binding site (PBS) and to activate the expression of adjacent genes that inhibit growth and/or invasion. Deletion of one or both p53 alleles reduces the expression of tetramers, resulting in decreased expression of the growth inhibitory genes

Ito, A. et al. (2001) EMBO J. 20, 1331-1340.
Sakaguchi, K. et al. (1998) Genes Dev. 12, 2831-2841.
Solomon, J.M. et al. (2006) Mol. Cell. Biol. 26, 28-38.

Form Supplied at 1.0mg/mL in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Purification Method Antibodies were produced by immunizing rabbits with synthetic peptide and KLH conjugates. Antibodies were purified by affinity-chromatography using epitope-specific peptide.
Clonality Polyclonal
Alias Tumor suppressor p53; Phosphoprotein p53; Antigen NY-CO-13; TP53;
Immunogen Species Homo sapiens (Human)
Target Names TP53
Storage Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
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Function Acts as a tumor suppressor in many tumor types; induces growth arrest or apoptosis depending on the physiological circumstances and cell type. Involved in cell cycle regulation as a trans-activator that acts to negatively regulate cell division by controlling a set of genes required for this process. One of the activated genes is an inhibitor of cyclin-dependent kinases. Apoptosis induction seems to be mediated either by stimulation of BAX and FAS antigen expression, or by repression of Bcl-2 expression. In cooperation with mitochondrial PPIF is involved in activating oxidative stress-induced necrosis; the function is largely independent of transcription. Induces the transcription of long intergenic non-coding RNA p21 (lincRNA-p21) and lincRNA-Mkln1. LincRNA-p21 participates in TP53-dependent transcriptional repression leading to apoptosis and seem to have to effect on cell-cycle regulation. Implicated in Notch signaling cross-over. Prevents CDK7 kinase activity when associated to CAK complex in response to DNA damage, thus stopping cell cycle progression. Isoform 2 enhances the transactivation activity of isoform 1 from some but not all TP53-inducible promoters. Isoform 4 suppresses transactivation activity and impairs growth suppression mediated by isoform 1. Isoform 7 inhibits isoform 1-mediated apoptosis. Regulates the circadian clock by repressing CLOCK-ARNTL/BMAL1-mediated transcriptional activation of PER2
Involvement in disease Esophageal cancer (ESCR); Li-Fraumeni syndrome (LFS); Squamous cell carcinoma of the head and neck (HNSCC); Lung cancer (LNCR); Papilloma of choroid plexus (CPP); Adrenocortical carcinoma (ADCC); Basal cell carcinoma 7 (BCC7)
Subcellular Location Cytoplasm, Nucleus, Nucleus, PML body, Endoplasmic reticulum, Mitochondrion matrix, Note=Interaction with BANP promotes nuclear localization, Recruited into PML bodies together with CHEK2, Translocates to mitochondria upon oxidative stress, Translocates to mitochondria in response to mitomycin C treatment (PubMed:27323408), SUBCELLULAR LOCATION: Isoform 1: Nucleus, Cytoplasm, Note=Predominantly nuclear but localizes to the cytoplasm when expressed with isoform 4, SUBCELLULAR LOCATION: Isoform 2: Nucleus, Cytoplasm, Note=Localized mainly in the nucleus with minor staining in the cytoplasm, SUBCELLULAR LOCATION: Isoform 3: Nucleus, Cytoplasm, Note=Localized in the nucleus in most cells but found in the cytoplasm in some cells, SUBCELLULAR LOCATION: Isoform 4: Nucleus, Cytoplasm, Note=Predominantly nuclear but translocates to the cytoplasm following cell stress, SUBCELLULAR LOCATION: Isoform 7: Nucleus, Cytoplasm, Note=Localized mainly in the nucleus with minor staining in the cytoplasm, SUBCELLULAR LOCATION: Isoform 8: Nucleus, Cytoplasm
Protein Families P53 family
Tissue Specificity Ubiquitous. Isoforms are expressed in a wide range of normal tissues but in a tissue-dependent manner. Isoform 2 is expressed in most normal tissues but is not detected in brain, lung, prostate, muscle, fetal brain, spinal cord and fetal liver. Isoform 3
Database Links

HGNC: 11998

OMIM: 133239

KEGG: hsa:7157

STRING: 9606.ENSP00000269305

UniGene: Hs.437460

Pathway MAPK signaling pathway
p53 signaling pathway
PI3K-Akt signaling pathway
Wnt signaling pathway
Apoptosis
Cell cycle
Cellular senescence
Cell ageing and metabolism
Sphingolipid signaling pathway
Neurotrophin signaling pathway

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