MABE986
Anti-PTB Antibody, clone BB7
clone Bb7, from mouse
Synonym(s):
Polypyrimidine tract-binding protein 1, PTB, 57 kDa RNA-binding protein PPTB-1, Heterogeneous nuclear ribonucleoprotein I, hnRNP I, PTB
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About This Item
UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41
Recommended Products
biological source
mouse
Quality Level
antibody form
purified antibody
antibody product type
primary antibodies
clone
Bb7, monoclonal
species reactivity
mouse, human
technique(s)
immunocytochemistry: suitable
immunoprecipitation (IP): suitable
western blot: suitable
isotype
IgG2bκ
NCBI accession no.
UniProt accession no.
shipped in
wet ice
target post-translational modification
unmodified
Gene Information
human ... PTBP1(5725)
General description
Polypyrimidine tract-binding protein 1 (UniProt P26599; also known as 57 kDa RNA-binding protein PPTB-1, Heterogeneous nuclear ribonucleoprotein I, Heterogeneous nuclear ribonucleoprotein polypeptide I, hnRNP I, PTB, RNA-binding protein) is encoded by the PTBP1 (also known as HNRNP-I, HNRNPI, HNRPI, PTB, PTB2, PTB3, PTB4, PTB-1, PTB-T) gene (Gene ID 5725) in human. The serine–arginine rich (SR) proteins and the heterogeneous nuclear ribonucleoproteins (hnRNPs) are the most typical families of RBPs involved in splicing regulation. SR proteins generally play a positive role in exon recognition by binding exonic and intronic enhancers near the alternative splice sites. On the other hand, hnRNPs often bind to silencer elements and interfere with the recruitment of spliceosome components or positive regulators. PTB, also known as hnRNP I, belongs to an hnRNP family of RNA-binding proteins and is involved in several aspects of cellular mRNA metabolism including splicing, RNA stability, and internal ribosome entry site (IRES)-mediated translation of viral and cellular mRNAs. PTB functions as a splicing repressor by preventing recruitment of U2AF65 or correct base pairing of U2 snRNP, or by affecting the interaction of U1 snRNP with other components of the spliceosome.
Immunogen
Recombinant protein human PTB.
Application
Research Category
Epigenetics & Nuclear Function
Epigenetics & Nuclear Function
Research Sub Category
Nuclear Receptors
Nuclear Receptors
This Anti-PTB Antibody, clone BB7 is validated for use in Immunocytochemistry, Western Blotting and Immunoprecipitation for the detection of PTB .
Western Blotting Analysis: 1.0 µg/mL from a representative lot detected PTB in 10 µg of HT-29 and HEK293 cell lysate.
Immunocytochemistry Analysis: A 1:500 dilution of this antibody detected PTB in HeLa, HUVEC, and NIH/3T3 cells.
Immunoprecipitation Analysis: A representative lot immunoprecipitated PTB in HeLa and WERI-1 nuclear extracts. (Chou, M.Y., et al. (2000). Mol Cell. 5(6):949-57).
Western Blotting Analysis: A representative lot detected PTB in HeLa and WERI-1 nuclear extracts (Sharma, S., et al. (2005). Mol Cell. 19(4):485-496).
Immunocytochemistry Analysis: A 1:500 dilution of this antibody detected PTB in HeLa, HUVEC, and NIH/3T3 cells.
Immunoprecipitation Analysis: A representative lot immunoprecipitated PTB in HeLa and WERI-1 nuclear extracts. (Chou, M.Y., et al. (2000). Mol Cell. 5(6):949-57).
Western Blotting Analysis: A representative lot detected PTB in HeLa and WERI-1 nuclear extracts (Sharma, S., et al. (2005). Mol Cell. 19(4):485-496).
Quality
Evaluated by Western Blotting in HeLa cell lysate.
Western Blotting Analysis: 1.0 µg/mL of this antibody detected PTB in 10 µg of HeLa cell lysate.
Western Blotting Analysis: 1.0 µg/mL of this antibody detected PTB in 10 µg of HeLa cell lysate.
Target description
~57 kDa observed. The target band may appear as a doublet, most likely due to the presence of spliced isoforms. Isoform 1 (57.2 kDa calculated), isoform 2/PTB2 (59.0 kDa calculated), isoforms 3 (59.6 kDa calculated).
Physical form
Format: Purified
Protein G Purified
Purified mouse monoclonal IgG2bκ antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
Storage and Stability
Stable for 1 year at 2-8°C from date of receipt.
Other Notes
Concentration: Please refer to lot specific datasheet.
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
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Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Hui Miao et al.
Science advances, 8(51), eabq7289-eabq7289 (2022-12-24)
Understanding how long noncoding RNAs (lncRNAs) cooperate with splicing factors (SFs) in alternative splicing (AS) control is fundamental to human biology and disease. We show that metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), a well-documented AS-implicated lncRNA, regulates AS via two
Hyojeong Hwang et al.
Cell reports, 41(11), 111802-111802 (2022-12-15)
Asymmetric localization of mRNAs is crucial for cell polarity and cell fate determination. By performing fractionation RNA-seq, we report here that a large number of maternal RNAs are associated with the ER in Xenopus oocytes but are released into the
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