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Key Documents

04-1572-I

Sigma-Aldrich

Anti-RNA polymerase II subunit B1 (phospho-CTD Ser-5) Antibody, clone 3E8

culture supernatant, clone 3E8, from rat

Sinónimos:

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

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

origen biológico

rat

Nivel de calidad

forma del anticuerpo

culture supernatant

tipo de anticuerpo

primary antibodies

clon

3E8, monoclonal

reactividad de especies

mouse

reactividad de especies (predicha por homología)

human (immunogen homology)

técnicas

ChIP: suitable
ELISA: suitable
western blot: suitable

isotipo

IgG2aκ

Nº de acceso NCBI

Nº de acceso UniProt

Condiciones de envío

dry ice

modificación del objetivo postraduccional

phosphorylation (pSer5)

Información sobre el gen

human ... POLR2B(5431)

Descripción general

RPB1 (RNA polymerase II subunit B1) is the catalytic component of RNA polymerase II which synthesizes mRNA and non-coding RNAs. During transcription, elongation is influenced by the phosphorylation status of the C-terminal domain (CTD) of RPB1, which acts as an assembly platform for factors regulating transcription initiation, elongation, termination and mRNA processing. Phosphorylation occurs mainly at residues ′Ser-2′ and ′Ser-5′ of the tandem 7 residue repeats in the C-terminal domain (CTD), which activates Pol II. This phosphorylation also can occur at ′Ser-7′ of the heptapepdtide repeat. This antibody recognizes the ′Ser-5′ CTD residue of RPB1.

Especificidad

This antibody recognizes RNA Polymerase II subunit B1 phosphorylated at Ser5 of the C-terminus domain (CTD).

Inmunógeno

Epitope: Phosphorylated Ser5 at the C-terminus domain (CTD).
Ovalbumin-conjugated linear peptide corresponding to human RNA Polymerase II subunit B1 phosphorylated at Ser5 of the C-terminal domain (CTD).

Aplicación

Anti-RNA polymerase II subunit B1 (phospho-CTD Ser-5) Antibody, clone 3E8 is a highly specific rat monoclonal antibody, that targets RNA Polymerase & has been tested in western blotting & ELISA.
Chromatin Immunoprecipitation Analysis: A representative lot was used by an independent laboratory to immunoprecipitate RNA polymerase II subunit B1 (phospho-CTD Ser-5) in ChIP (Chapman, R., et al. (2007). Science. 318(5857):1780 -1782.).

ELISA Analysis: A representative lot was used by an independent laboratory to detect RNA polymerase II subunit B1 (phospho-CTD Ser-5) in ChIP (Chapman, R., et al. (2007). Science. 318(5857):1780 -1782.).
Research Category
Epigenetics & Nuclear Function
Research Sub Category
Transcription Factors

Calidad

Evaluated by Western Blot in untreated and lambda phosphotase treated NIH/3T3 cell lysates.

Western Blot Analysis: A 1:2,000 dilution from a representative lot detected RNA polymerase II subunit B1 (phospho-CTD Ser-5) in 10 µg of untreated and lambda phosphotase treated NIH/3T3 cell lysates.

Descripción de destino

~220 kDa observed

Ligadura / enlace

Replaces: 04-1572

Forma física

Rat monoclonal IgG2aκ with 0.05% sodium azide.
Unpurified

Almacenamiento y estabilidad

Stable for 1 year at -20°C from date of receipt.
Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.

Nota de análisis

Control
Untreated and lambda phosphotase treated NIH/3T3 cell lysates

Cláusula de descargo de responsabilidad

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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Código de clase de almacenamiento

10 - Combustible liquids

Clase de riesgo para el agua (WGK)

WGK 1


Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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In vivo live imaging of RNA polymerase II transcription factories in primary cells.
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Genes & Development, 27, 767-777 (2013)
Dan Yu et al.
Nucleic acids research, 47(9), 4462-4475 (2019-03-14)
The general transcription factor P-TEFb, a master regulator of RNA polymerase (Pol) II elongation, phosphorylates the C-terminal domain (CTD) of Pol II and negative elongation factors to release Pol II from promoter-proximal pausing. We show here that P-TEFb surprisingly inhibits
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