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AB248749

Anti-PTBP1 antibody [EPR9049(B)] - BSA and Azide free

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Rabbit Recombinant Monoclonal PTBP1 antibody. Carrier free. Suitable for WB, ICC/IF and reacts with Human samples.

View Alternative Names

PTB, PTBP1, Polypyrimidine tract-binding protein 1, 57 kDa RNA-binding protein PPTB-1, Heterogeneous nuclear ribonucleoprotein I, hnRNP I

2 Images
Western blot - Anti-PTBP1 antibody [EPR9049(B)] - BSA and Azide free (AB248749)
  • WB

Lab

Western blot - Anti-PTBP1 antibody [EPR9049(B)] - BSA and Azide free (AB248749)

This data was developed using the same antibody clone in a different buffer formulation (ab134950).

Lanes 1 - 2 : Merged signal (red and green). Green - ab134950 observed at 57 kDa. Red - loading control, ab9484, observed at 37 kDa.

ab134950 was shown to specifically react with PTBP1 in wild-type HAP1 cells as signal was lost in PTBP1 knockout cells. Wild-type and PTBP1 knockout samples were subjected to SDS-PAGE. ab134950 and ab9484 (Mouse anti-GAPDH loading control) were incubated overnight at 4°C at 1/1000 dilution and 1/20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preabsorbed ab216773 and Goat anti-Mouse IgG H&L (IRDye® 680RD) preabsorbed ab216776 secondary antibodies at 1/10000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-PTBP1 antibody [EPR9049(B)] - BSA and Azide free (ab248749) at 1000 µg

Lane 1:

Wild-type HAP1 whole cell lysate at 20 µg

Lane 2:

PTBP1 knockout HAP1 whole cell lysate at 20 µg

Predicted band size: 57 kDa

false

Western blot - Anti-PTBP1 antibody [EPR9049(B)] - BSA and Azide free (AB248749)
  • WB

Lab

Western blot - Anti-PTBP1 antibody [EPR9049(B)] - BSA and Azide free (AB248749)

This data was developed using the same antibody clone in a different buffer formulation (ab134950).

Lanes 1- 2 : Merged signal (red and green). Green - ab134950 observed at 57 kDa. Red - Anti-GAPDH antibody [6C5] - Loading Control (ab8245) observed at 37 kDa.

ab134950 was shown to react with PTBP1 in wild-type HeLa cells in western blot. Loss of signal was observed when knockout cell line ab265155 (knockout cell lysate ab257614) was used. Wild-type HeLa and PTBP1 knockout HeLa cell lysates were subjected to SDS-PAGE. Membrane was blocked for 1 hour at room temperature in 0.1% TBST with 3% non-fat dried milk. ab134950 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) overnight at 4°C at a 1 in 1000 dilution and a 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye®800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye®680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-PTBP1 antibody [EPR9049(B)] (<a href='/en-us/products/primary-antibodies/ptbp1-antibody-epr9049b-ab134950'>ab134950</a>) at 1/1000 dilution

Lane 1:

Wild-type HeLa cell lysate at 20 µg

Lane 2:

PTBP1 knockout HeLa cell lysate at 20 µg

Lane 2:

Western blot - Human PTBP1 knockout HeLa cell line (<a href='/en-us/products/cell-lines/human-ptbp1-knockout-hela-cell-line-ab265155'>ab265155</a>)

Predicted band size: 57 kDa

Observed band size: 57 kDa

false

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR9049(B)

Isotype

IgG

Carrier free

Yes

Reacts with

Human

Applications

WB, ICC/IF

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

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Product details

ab248749 is the carrier-free version of ab134950.

Species reactivity
Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species.
Please contact us for more information.

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification
Storage buffer
pH: 7.2 - 7.4 Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
Do Not Freeze

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

PTBP1 also known as polypyrimidine tract-binding protein 1 or hnRNP I is a protein involved in RNA binding. It weighs approximately 57 kDa and is known for its expression in diverse cell types especially in the nucleus of eukaryotic cells. PTBP1 contains four RNA recognition motifs which allow it to interact with polypyrimidine-rich sequences in pre-mRNA. This interaction plays an important role in RNA splicing and the regulation of alternative splicing events.
Biological function summary

PTBP1 influences the stability transport and translation of mRNA molecules. It is part of the heterogeneous nuclear ribonucleoprotein complex which plays a fundamental role in the processing and modification of pre-mRNA into mature mRNA. This activity impacts the expression of a wide range of genes affecting cellular function and growth. PTBP1 regulates mRNA metabolism contributing significantly to post-transcriptional gene regulation.

Pathways

The involvement of PTBP1 spans the management of alternative splicing and the modulation of gene expression. It participates importantly in the alternative splicing pathway alongside proteins like PTBP2 which perform overlapping functions in neurons. PTBP1 affects exon inclusion or exclusion influencing the genetic diversity presented in protein forms within cells. It also plays a role in the exon junction complex pathway impacting post-translational modifications and protein interactions.

Variations in PTBP1 function are linked to conditions such as cancer and neurological disorders. Altered expression levels or mutations can contribute to carcinogenesis through the misregulation of splice variants specific to oncogenes and tumor suppressor genes. In neurological disorders PTBP1 interacts with proteins like FUS affecting the regulation of neuronal-specific alternative splicing. Misbalance in these interactions can have significant pathological implications contributing to diseases such as amyotrophic lateral sclerosis (ALS) and glioblastomas.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Plays a role in pre-mRNA splicing and in the regulation of alternative splicing events. Activates exon skipping of its own pre-mRNA during muscle cell differentiation. 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. Represses the splicing of MAPT/Tau exon 10 (PubMed : 15009664). Binds to polypyrimidine-rich controlling element (PCE) of CFTR and promotes exon skipping of CFTR exon 9, thereby antagonizing TIA1 and its role in exon inclusion of CFTR exon 9 (PubMed : 14966131). Plays a role in the splicing of pyruvate kinase PKM by binding repressively to a polypyrimidine tract flanking PKM exon 9, inhibiting exon 9 inclusion and resulting in exon 10 inclusion and production of the PKM M2 isoform (PubMed : 20010808). In case of infection by picornaviruses, binds to the viral internal ribosome entry site (IRES) and stimulates the IRES-mediated translation (PubMed : 21518806).
See full target information PTBP1

Product promise

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