Typical Testing Data/Standard Curve (for reference only)
Human p53 ELISA Kit | p53 elisa kit
p53 (human) ELISA Kit
Detection Range: 0.2 ng/ml to 25.6 ng/ml.
This ELISA kit shows no cross-reactivity with other relevant proteins.
Shelf Life: 12 months
Typical Testing Data/Standard Curve (for reference only)
Typical Testing Data/Standard Curve (for reference only)
Background: MyBioSource's p53 Enzyme-Linked Immunosorbent Assay (ELISA) Kit is an in vitro assay for the quantitative measurement of native and recombinant human p53. The p53 protein is encoded by the TP53 gene. It is composed of 393 amino acids but its apparent molecular mass is 53 kDa. p53 binds to a DNA consensus sequence, the p53 response element, and regulates normal cell cycle events by activating transcription of genes involved either in progression through the cell cycle, or causing arrest in G1 when the genome is damaged. It acts as a pivotal suppressor of inappropriate cell proliferation. By initiating suppressive effects through induction of apoptosis, cell senescence, or transient cell-cycle arrest, p53 plays an important role in cancer suppression, developmental regulation, and aging. p53 is found in increased amounts in a wide variety of transformed and tumor cells, where its concentration is increased 5-1000 fold over the concentration in normal cells. Meanwhile, p53 is also frequently mutated or inactivated in about 60% of cancers. The p53 ELISA assay employs an antibody specific for human p53 coated on a 96-well plate. Standards and samples are pipetted into wells and p53 present in the sample is bound to the wells by immobilized antibody. Wells are washed and a biotin-labeled human p53 specific detection antibody is added. After washing away unbound detection antibody, a streptavidin HRP-conjugate is added to the wells. The wells are again washed, a TMB substrate solution is added, and color develops in proportion to the amount of bound p53. Stop Solution changes the color from blue to yellow, and the intensity of the color is measured at 450 nm. Sensitivity of the kit is 0.1 ng/ml and detection range is from 0.2 ng/ml to 25.6 ng/ml. Recovery within this range is 86.3%. The intra-assay reproducibility as measured by the coefficient of variation (CV) is < 8 % & inter-assay has CV < 12 %.
Summary: Detection method- Absorbance (450 nm)
Species reactivity-human
Application- Quantitative measurement of native and recombinant p53.
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. Mutations in this gene are associated with a variety of human cancers, including hereditary cancers such as Li-Fraumeni syndrome. Alternative splicing of this gene and the use of alternate promoters result in multiple transcript variants and isoforms. Additional isoforms have also been shown to result from the use of alternate translation initiation codons (PMIDs: 12032546, 20937277). [provided by RefSeq, Feb 2013]
Uniprot Description
p53: a transcription factor and major tumor suppressor that plays a major role in regulating cellular responses to DNA damage and other genomic aberrations. Activation of p53 can lead to either cell cycle arrest and DNA repair or apoptosis. More than 50 percent of human tumors contain a mutation or deletion of the TP53 gene. p53 is modified post-translationally at multiple sites. DNA damage induces phosphorylation of p53 at S15, S20 and S37, reducing its interaction with the oncoprotein MDM2. MDM2 inhibits p53 accumulation by targeting it for ubiquitination and proteasomal degradation. Phosphorylated by many kinases including Chk2 and Chk1 at S20, enhancing its tetramerization, stability and activity. The phosphorylation by CAK at S392 is increased in human tumors and has been reported to influence the growth suppressor function, DNA binding and transcriptional activation of p53. Phosphorylation of p53 at S46 regulates the ability of p53 to induce apoptosis. The acetylation of p53 appears to play a positive role in the accumulation of p53 during the stress response. Following DNA damage, p53 becomes acetylated at K382, enhancing its binding to DNA. Deacetylation of p53 can occur through interaction with SIRT1, a deacetylase that may be involved in cellular aging and the DNA damage response. p53 regulates the transcription of a set of genes encoding endosomal proteins that regulate endosomal functions. These include STEAP3 and CHMP4C, which enhance exosome production, and CAV1 and CHMP4C, which produce a more rapid endosomal clearance of the EGFR from the plasma membrane. DNA damage regulates a p53-mediated secretory pathway, increasing the secretion of some proteins such as Hsp90, SERPINE1, SERPINB5, NKEF-A, and CyPA, and inhibiting the secretion of others including CTSL and IGFBP-2. Two alternatively spliced human isoforms have been reported. Isoform 2 is expressed in quiescent lymphocytes. Seems to be non-functional. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay.
Protein type: Transcription factor; Tumor suppressor; DNA-binding; Activator; Nuclear receptor co-regulator; Motility/polarity/chemotaxis
Chromosomal Location of Human Ortholog: 17p13.1
Cellular Component: transcription factor TFIID complex; PML body; protein complex; nuclear matrix; mitochondrion; endoplasmic reticulum; replication fork; cytosol; nucleoplasm; nuclear body; mitochondrial matrix; cytoplasm; nuclear chromatin; nucleolus; nucleus; chromatin
Molecular Function: identical protein binding; protease binding; zinc ion binding; protein phosphatase 2A binding; p53 binding; protein N-terminus binding; receptor tyrosine kinase binding; transcription factor binding; protein phosphatase binding; protein kinase binding; histone acetyltransferase binding; protein binding; histone deacetylase regulator activity; enzyme binding; copper ion binding; DNA binding; protein heterodimerization activity; chaperone binding; ubiquitin protein ligase binding; damaged DNA binding; chromatin binding; transcription factor activity; ATP binding
Biological Process: viral reproduction; positive regulation of apoptosis; positive regulation of transcription, DNA-dependent; multicellular organismal development; T cell differentiation in the thymus; gastrulation; determination of adult life span; DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest; regulation of apoptosis; response to antibiotic; cellular response to glucose starvation; protein localization; negative regulation of neuroblast proliferation; base-excision repair; transforming growth factor beta receptor signaling pathway; cerebellum development; protein complex assembly; cell cycle arrest; ER overload response; response to X-ray; somitogenesis; release of cytochrome c from mitochondria; cell aging; chromatin assembly; circadian behavior; rRNA transcription; positive regulation of peptidyl-tyrosine phosphorylation; negative regulation of fibroblast proliferation; negative regulation of DNA replication; embryonic organ development; positive regulation of transcription from RNA polymerase II promoter; regulation of mitochondrial membrane permeability; negative regulation of transcription, DNA-dependent; regulation of tissue remodeling; negative regulation of apoptosis; G1 DNA damage checkpoint; transcription from RNA polymerase II promoter; DNA damage response, signal transduction by p53 class mediator; apoptosis; negative regulation of transcription from RNA polymerase II promoter; response to salt stress; entrainment of circadian clock by photoperiod; positive regulation of protein oligomerization; negative regulation of cell proliferation; positive regulation of histone deacetylation; DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator; regulation of transcription, DNA-dependent; T cell proliferation during immune response; positive regulation of neuron apoptosis; double-strand break repair; response to gamma radiation; cell differentiation; DNA damage response, signal transduction by p53 class mediator resulting in induction of apoptosis; protein tetramerization; mitochondrial DNA repair; Notch signaling pathway; in utero embryonic development; B cell lineage commitment; multicellular organism growth; cell proliferation; T cell lineage commitment; neuron apoptosis; negative regulation of helicase activity; protein import into nucleus, translocation; nucleotide-excision repair; Ras protein signal transduction; DNA strand renaturation; negative regulation of cell growth; negative regulation of transforming growth factor beta receptor signaling pathway; blood coagulation; response to DNA damage stimulus
Disease: Papilloma Of Choroid Plexus; Pancreatic Cancer; Nasopharyngeal Carcinoma; Li-fraumeni Syndrome 1; Breast Cancer; Osteogenic Sarcoma; Colorectal Cancer; Adrenocortical Carcinoma, Hereditary; Glioma Susceptibility 1; Hepatocellular Carcinoma; Basal Cell Carcinoma, Susceptibility To, 7
Research Articles on p53
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Product Notes
The Human p53 tp53 (Catalog #AAA843423) is an ELISA Kit and is intended for research purposes only. The product is available for immediate purchase. The AAA843423 ELISA Kit recognizes Human p53. Quantitative measurement of native and recombinant p53. Researchers should empirically determine the suitability of the p53 tp53 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "p53, ELISA Kit" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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