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MABE348

Sigma-Aldrich

Anti-phospho-RNAPII Antibody (Thr4), clone 1G7

clone 1G7, from rat

Synonym(s):

DNA-directed RNA polymerase II subunit RPB1, RNA polymerase II subunit B1, DNA-directed RNA polymerase II subunit A, DNA-directed RNA polymerase III largest subunit, RNA-directed RNA polymerase II subunit RPB1

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About This Item

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

biological source

rat

Quality Level

antibody form

purified antibody

antibody product type

primary antibodies

clone

1G7, monoclonal

species reactivity

mouse, yeast, human

technique(s)

ChIP: suitable
immunocytochemistry: suitable
immunoprecipitation (IP): suitable
western blot: suitable

isotype

IgG2aκ

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

phosphorylation (pThr4)

Gene Information

human ... POLR2A(5430)

General description

RNA polymerase II (RNAPII or Pol II) is a multi-subunit enzyme responsible for the transcription of transcription of DNA into RNA from protein-coding genes. Transcription initiation requires recruitment of the complete transcription machinery to a promoter via solicitation by activators and chromatin remodeling factors. RNAPII can coordinate 10 to 14 subunits. This complex interacts with the promoter regions of genes and a variety of elements and transcription factors. The DNA binding domain of the polymerase is a groove where TFIIB orients the DNA for unwinding and transcription.

Specificity

This antibody recognizes RNAPII phosphorylated at Thr4.

Immunogen

Epitope: Phosphorylated Thr4
Ovalbumin-conjugated linear peptide corresponding to human RNAPII phosphorylated at Thr4.

Application

Detect the phospho-RNAPII (Thr4) protein using this Anti-phospho-RNAPII (Thr4), clone 1G7 validated for use in wb, IP, ICC & ChIP.
Immunoprecipitation Analysis: A representative lot from an independent laboratory detected phospho-RNAPII (Thr4) in HeLa cell extracts (Hintermair, C., et al. (2012). EMBO J. 31(12):2784-2791.).

Immunofluorescence Analysis: A representative lot from an independent laboratory detected phospho-RNAPII (Thr4) in HeLa cells (Hintermair, C., et al. (2012). EMBO J. 31(12):2784-2791.).

Chromatin Immunoprecipitation (ChIP) Analysis: A representative lot from an independent laboratory immunoprecipitated phospho-RNAPII (Thr4) in stably transfected Raji cell lysates (Hintermair, C., et al. (2012). EMBO J. 31(12):2784-2791.).
Research Category
Epigenetics & Nuclear Function
Research Sub Category
Cell Cycle, DNA Replication & Repair

Quality

Evaluated by Western Blot in untreated and lambda phosphatase treated HeLa cell lysates.

Western Blot Analysis: A 1:500 dilution of this antibody detected phospho-RNAPII (Thr4) in 10 µg of untreated HeLa cell lysate. (Lambda phosphatase treatment was performed during the western blot procedure.)

Target description

~220 kDa observed

Physical form

Format: Purified
Protein G Purified
Purified rat 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
Untreated and lambda phosphatase treated HeLa cell lysates.

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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Corinna Hintermair et al.
The EMBO journal, 31(12), 2784-2797 (2012-05-03)
Eukaryotic RNA polymerase II (Pol II) has evolved an array of heptad repeats with the consensus sequence Tyr1-Ser2-Pro3-Thr4-Ser5-Pro6-Ser7 at the carboxy-terminal domain (CTD) of the large subunit (Rpb1). Differential phosphorylation of Ser2, Ser5, and Ser7 in the 5' and 3'
Baishan Jiang et al.
Nature chemical biology, 17(6), 675-683 (2021-03-24)
Cyclin-dependent kinase 12 (CDK12) is an emerging therapeutic target due to its role in regulating transcription of DNA-damage response (DDR) genes. However, development of selective small molecules targeting CDK12 has been challenging due to the high degree of homology between

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