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05-1588

Sigma-Aldrich

Anti-U1-70K Antibody, clone 9C4.1

clone 9C4.1, from mouse

Synonym(s):

small nuclear ribonucleoprotein 70kDa (U1), U1 small nuclear ribonucleoprotein 70 kDa, small nuclear ribonucleoprotein 70kDa (RNP antigen), U1 snRNP 70 kDa

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified antibody

antibody product type

primary antibodies

clone

9C4.1, monoclonal

species reactivity

rat, mouse, human

technique(s)

immunocytochemistry: suitable
western blot: suitable

isotype

IgG2aκ

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

human ... SNRNP70(6625)

Related Categories

General description

U1 small nuclear ribonucleoprotein 70 kDa (U1-70K) is one of three specific proteins found within the U1 snRNP core, which includes at least seven core proteins found in all U snRNPs and three specific proteins; U1-70K, U1-A, and U1-C. U1-70K is involved in mediating pre-mRNA splicing through binding the loop I region of U1-snRNA with its RPM (RNA recognition motif) binding domain. In addition, its RNA binding domain, U1-70K also contains two argine-rich regions, accented with acidic or serine residues, that is thought to have trans-acting functions. Alternative splicing results in 4 known isoforms. Truncated forms of U1-70K are unable to bind RNA.

Specificity

This antibody recognizes U1-70K at the C-terminal domain.

Immunogen

Epitope: C-terminal domain
Recombinant protein corresponding to C-terminal domain of human U1-70K.

Application

Immunocytochemistry Analysis: A 1:500 dilution of a representative lot of this antibody has been shown to detect U1-70K in NIH/3T3, A431, and HeLa cells.
Research Category
Epigenetics & Nuclear Function
Research Sub Category
RNA Metabolism & Binding Proteins
Use Anti-U1-70K Antibody, clone 9C4.1 (Mouse Monoclonal Antibody) validated in WB, ICC to detect U1-70K also known as small nuclear ribonucleoprotein 70kDa (U1).

Quality

Evaluated by Western Blot in HeLa cell lysate.

Western Blot Analysis: 0.5 µg/mL of this antibody detected U1-70K on 10 µg of HeLa cell lysate.

Target description

Calculated 52 kDa Observed ~57 kDa

Physical form

Format: Purified
Protein G Purified
Purified mouse monoclonal IgG2aκ 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.

Analysis Note

Control
HeLa cell lysate

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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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J Cadranel,M Garabedian,B Milleron,H Guillozo,G Akoun,A J Hance
The Journal of Clinical Investigation null
Suryasree Subramania et al.
Nucleic acids research, 47(8), 4181-4197 (2019-02-16)
Src associated in mitosis (SAM68) plays major roles in regulating RNA processing events, such as alternative splicing and mRNA translation, implicated in several developmental processes. It was previously shown that SAM68 regulates the alternative splicing of the mechanistic target of
Isaac Bishof et al.
The Journal of biological chemistry, 293(28), 11047-11066 (2018-05-29)
The U1 small nuclear ribonucleoprotein 70 kDa (U1-70K) and other RNA-binding proteins (RBPs) are mislocalized to cytoplasmic neurofibrillary Tau aggregates in Alzheimer's disease (AD), yet the co-aggregation mechanisms are incompletely understood. U1-70K harbors two disordered low-complexity domains (LC1 and LC2)
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RNA molecules function as messenger RNAs (mRNAs) that encode proteins and noncoding transcripts that serve as adaptor molecules, structural components, and regulators of genome organization and gene expression. Their function and regulation are largely mediated by RNA binding proteins (RBPs).

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