|Positive WB detected in||A431 cells, HEK-293 cells, NIH/3T3 cells|
|Positive IP detected in||A431 cells|
|Positive IHC detected in||human prostate cancer tissue, human ovary tumor tissue, human endometrial cancer tissue|
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
|Positive IF detected in||HepG2 cells|
|Western Blot (WB)||WB : 1:500-1:2000|
|Immunoprecipitation (IP)||IP : 0.5-4.0 ug for IP and 1:500-1:2000 for WB|
|Immunohistochemistry (IHC)||IHC : 1:50-1:500|
|Immunofluorescence (IF)||IF : 1:20-1:200|
|Sample-dependent, check data in validation data gallery|
The immunogen of 21891-1-AP is P53 Fusion Protein expressed in E. coli.
|Tested Reactivity||human, mouse, rat|
|Cited Reactivity||human, mouse|
|Host / Isotype||Rabbit / IgG|
|Immunogen||P53 fusion protein Ag16596|
|Full Name||tumor protein p53|
|Calculated molecular weight||393 aa, 44 kDa|
|Observed molecular weight||53 kDa|
|GenBank accession number||BC003596|
|Gene ID (NCBI)||7157|
|Purification Method||Antigen affinity purification|
|Storage Buffer||PBS with 0.02% sodium azide and 50% glycerol pH 7.3.|
|Storage Conditions||Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage.|
1. What is p53?
P53 is a tumor suppressor gene that plays a role in maintaining genomic stability and controlling apoptosis. During the cell cycle, it can arrest cells at the G1/S checkpoint and activate DNA repair mechanisms. It is the most mutated gene in cancer. In unstressed cells, p53 usually exists at low levels in an inactive form, being bound to Mdm2.
2. FAQs and p53
a. I fail to detect p53 by western blotting
Basal levels of wild-type p53 in untreated cells can be low. Try to load more cell lysate and use a positive control – a lysate of cells treated with DNA-damaging agents should increase p53 levels.
b. I fail to detect p53 in some cell lines by western blotting
Various p53 mutations are present in cancer cell types. If mutations cause truncations/deletions some monoclonal antibodies may no longer recognize mutated p53. You have more chances of detecting various p53 mutants with our polyclonal antibody.
c. I can detect more than one band ~50 kDa size / different cell lines give bands at slightly different size
p53 is a subject of post-translational modifications (http://p53.free.fr/p53_info/p53_modifications.html) and more than one isoform may be expressed (http://p53.free.fr/p53_info/p53_isoforms.html). Also, it is possible that your cell line of interest expresses one allele with mutated p53 with altered molecular weight.
|Product Specific Protocols|
|WB protocol for P53 antibody 21891-1-AP||Download protocol|
|IHC protocol for P53 antibody 21891-1-AP||Download protocol|
|IF protocol for P53 antibody 21891-1-AP||Download protocol|
|IP protocol for P53 antibody 21891-1-AP||Download protocol|
|Click here to view our Standard Protocols|
NKD1 correlates with a poor prognosis and inhibits cell proliferation by inducing p53 expression in hepatocellular carcinoma.
Dig Dis Sci
P53 Activated by ER Stress Aggravates Caerulein-Induced Acute Pancreatitis Progression by Inducing Acinar Cell Apoptosis.
Cancer Gene Ther
UNC5B mediates G2/M phase arrest of bladder cancer cells by binding to CDC14A and P53.
The reviews below have been submitted by verified Proteintech customers who received an incentive forproviding their feedback.
Y (Verified Customer) (04-01-2019)
We really like the trial size, it lets us try to test if the antibody works on our experiment.