Polypyrimidine tract-binding protein 1 (PTBP1), also known as PTB or hnRNP I, is a ubiquitously expressed RNA-binding protein. It regulates pre-mRNA alternative splicing by binding to polypyrimidine-rich sequences, often repressing the inclusion of specific exons—critical for processes like embryonic development and neuronal differentiation.
PTBP1 is dysregulated in multiple cancers (glioblastoma, breast, colorectal) where its overexpression drives tumor growth and metastasis via modulating oncogenic splicing programs. It also links to neurodegenerative disorders (e.g., ALS) through RNA metabolism defects. Preclinical studies explore small molecules targeting its RNA-binding domain and antisense oligonucleotides to inhibit its oncogenic functions.
Recombinant Human Polypyrimidine tract-binding protein 1 (PTBP1) (CSB-MP018948HUh6)
Validated Data
(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
PTBP1 Recombinant Monoclonal Antibody (CSB-RA987652A0HU)
Validated Data
Western Blot
Positive WB detected in: Hela whole cell lysate, HepG2 whole cell lysate, PC-3 whole cell lysate, K562 whole cell lysate, HL-60 whole cell lysate, MCF-7 whole cell lysate, Jurkat whole cell lysate
All lanes: PTBP1 antibody at 1:1000
Secondary
Goat polyclonal to rabbit IgG at 1/50000 dilution
Predicted band size: 58, 60, 60 kDa
Observed band size: 58 kDa
IHC image of CSB-RA987652A0HU diluted at 1:100 and staining in paraffin-embedded human breast cancer performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
IHC image of CSB-RA987652A0HU diluted at 1:100 and staining in paraffin-embedded human testis tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4℃ overnight. The primary is detected by a Goat anti-rabbit IgG polymer labeled by HRP and visualized using 0.05% DAB.
PTBP1 Antibody (CSB-PA00359A0Rb)
Validated Data
Immunohistochemistry of paraffin-embedded human small intestine tissue using CSB-PA00359A0Rb at dilution of 1:100
The following PTBP1 reagents supplied by CUSABIO are manufactured under a strict quality control system. Multiple applications have been validated and solid technical support is offered.
PTBP1 Antibodies for Homo sapiens (Human)
| Code | Product Name | Species Reactivity | Application |
|---|---|---|---|
| CSB-PA018948GA01HU | PTBP1 Antibody | Human,Mouse,Rat | ELISA,WB,IHC,IF |
| CSB-PA00359A0Rb | PTBP1 Antibody | Human | ELISA, IHC |
| CSB-PA00359B0Rb | PTBP1 Antibody, HRP conjugated | Human | ELISA |
| CSB-PA00359C0Rb | PTBP1 Antibody, FITC conjugated | Human | |
| CSB-PA00359D0Rb | PTBP1 Antibody, Biotin conjugated | Human | ELISA |
| CSB-RA987652A0HU | PTBP1 Recombinant Monoclonal Antibody | Human | ELISA, WB, IHC |
PTBP1 Proteins for Homo sapiens (Human)
| Code | Product Name | Source |
|---|---|---|
| CSB-YP018948HU CSB-EP018948HU CSB-BP018948HU CSB-EP018948HU-B |
Recombinant Human Polypyrimidine tract-binding protein 1 (PTBP1) | Yeast E.coli Baculovirus In Vivo Biotinylation in E.coli |
| CSB-MP018948HUh6 | Recombinant Human Polypyrimidine tract-binding protein 1 (PTBP1) | Mammalian cell |
| CSB-EP018948HUh2 | Recombinant Human Polypyrimidine tract-binding protein 1 (PTBP1) | E.coli |