保存方法Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
Preservative: 0.02% Sodium azide
Constituents: 0.5% Tris buffered saline, 0.5% BSA
Concentration information loading...
精製度Immunogen affinity purified
特記事項（精製）Purified from goat serum by ammonium sulphate precipitation followed by antigen affinity chromatography using the immunizing peptide.
Immunizing Peptide (Blocking)
Our Abpromise guarantee covers the use of ab5642 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|IP||Use at an assay dependent concentration. PubMed: 17967866|
|IHC-P||Use a concentration of 2 - 4 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.|
|ICC/IF||Use a concentration of 5 µg/ml.|
|WB||Use a concentration of 0.1 - 0.3 µg/ml. Detects a band of approximately 60-65 kDa (predicted molecular weight: 61-64 kDa).Can be blocked with Human PTBP1 peptide (ab23105).|
|ELISA||Use at an assay dependent concentration.
Antibody detection limit dilution 1:32,000.
機能Plays a role in pre-mRNA splicing and in the regulation of alternative splicing events. Binds to the polypyrimidine tract of introns. May promote RNA looping when bound to two separate polypyrimidine tracts in the same pre-mRNA. May promote the binding of U2 snRNP to pre-mRNA. Cooperates with RAVER1 to modulate switching between mutually exclusive exons during maturation of the TPM1 pre-mRNA.
配列類似性Contains 4 RRM (RNA recognition motif) domains.
- Information by UniProt
- 57 kDa RNA binding protein PPTB 1 antibody
- 57 kDa RNA-binding protein PPTB-1 antibody
- Heterogeneous nuclear ribonucleoprotein I antibody
Immunohistochemical analysis of paraffin embedded Human Kidney tissue labeling PTBP1 with ab5642 at 2 ug/ml. Tissue underwent antigen retrieval in steam with Tris/EDTA buffer (pH 9.0). The HRP-staining procedure was used for detection.
All lanes : Anti-PTBP1 antibody (ab5642) at 0.01 µg/ml
Lane 1 : Human epithelial cells from cervix adenocarcinoma
Lane 2 : Human liver hepatocellular carcinoma
Lane 3 : Human epithelial cells from embryonic kidney
Lysates/proteins at 35 µg per lane.
Predicted band size: 61-64 kDa
Immunohistochemical analysis of paraffin embedded Human Kidney tissue labeling PTBP1 with ab5642 at 2 ug/ml. Tissue underwent antigen retrieval in steam with citrate buffer (pH 6.0). The HRP-staining procedure was used for detection.
ab5642 staining (1ab5642 staining (1µg/ml) of Jurkat lysate (RIPA buffer, 30µg total protein per lane). Primary incubated for 1 hour. Detected by western blot using chemiluminescence.
µg/ml) of Jurkat lysate (RIPA buffer, 30 µg total protein per lane). Primary incubated for 1 hour. Detected by western blot using chemiluminescence.
ICC/IF image of ab5642 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal donkey serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab5642, 5µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 donkey anti-goat IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
IHC image of ab5642 staining in human normal testis formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol B. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab5642, 10µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.
For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.
Anti-PTBP1 antibody (ab5642) at 0.1 µg/ml + Human Ovary Lysate in RIPA buffer at 35 µg
Developed using the ECL technique.
Predicted band size: 61-64 kDa
ab5642 (5µg/ml) staining of paraffin embedded Human Skin. Steamed antigen retrieval with citrate buffer pH 6, AP-staining shows nuclear staining of keratinocytes.
This product has been referenced in:
- Georgilis A et al. PTBP1-Mediated Alternative Splicing Regulates the Inflammatory Secretome and the Pro-tumorigenic Effects of Senescent Cells. Cancer Cell 34:85-102.e9 (2018). Read more (PubMed: 29990503) »
- Aguilera O et al. Vitamin C uncouples the Warburg metabolic switch in KRAS mutant colon cancer. Oncotarget 7:47954-47965 (2016). Read more (PubMed: 27323830) »