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-mediatedapoptosis. 7 0 2 5Zakut-Houri R., EMBO J. 4:1251-1255(1985).Lamb P., Mol. Cell. Biol. 6:1379-1385(1986).Harlow E., Mol. Cell. Biol. 5:1601-1610(1985).
Host
Rabbit
Immunogen
Synthesized non-phosphopeptide derived from Human p53 around the phosphorylation site of serine 378 (S-T-S(p)-R-H).
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)
Raised In
Rabbit
Reactivity
Human, Mouse
Regulatory
RUO
Relevance
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-mediatedapoptosis. 7 0 2 5
Zakut-Houri R., EMBO J. 4:1251-1255(1985). Lamb P., Mol. Cell. Biol. 6:1379-1385(1986). Harlow E., Mol. Cell. Biol. 5:1601-1610(1985).
Species
Homo Sapiens (Human)
Specificity
The antibody detects endogenous levels of total p53 protein.
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
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
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
Weight
43.7kDa
Buffer
Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Form
Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Format
liquid
Purification
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
Purity
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
Storage
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.