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HPA020259

Sigma-Aldrich

Anti-NELFB antibody produced in rabbit

enhanced validation

Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution

Sinónimos:

Anti-COBRA1, Anti-Cofactor of BRCA1, Anti-NELF-B, Anti-Negative elongation factor B

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About This Item

Código UNSPSC:
12352203
Atlas de proteínas humanas número:
NACRES:
NA.41

origen biológico

rabbit

conjugado

unconjugated

forma del anticuerpo

affinity isolated antibody

tipo de anticuerpo

primary antibodies

clon

polyclonal

Línea del producto

Prestige Antibodies® Powered by Atlas Antibodies

formulario

buffered aqueous glycerol solution

reactividad de especies

human, rat, mouse

validación mejorada

orthogonal RNAseq
Learn more about Antibody Enhanced Validation

técnicas

immunoblotting: 0.04-0.4 μg/mL
immunofluorescence: 0.25-2 μg/mL
immunohistochemistry: 1:20-1:50

secuencia del inmunógeno

KETLTNCTEPLKAIEQFQTENGVLLPSLQSALPFLDLHGTPRLEFHQSVFDELRDKLLERVSAIASEGKAEERYKKLED

Condiciones de envío

wet ice

temp. de almacenamiento

−20°C

modificación del objetivo postraduccional

unmodified

Información sobre el gen

human ... COBRA1(25920)

Descripción general

Negative elongation factor complex member B (NELFB) is part of the negative elongation factor (NELF) complex.

Inmunógeno

Negative elongation factor B recombinant protein epitope signature tag (PrEST)

Aplicación

All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project and as a result, are supported by the most extensive characterization in the industry.

The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. We also provide Prestige Antibodies® protocols and other useful information.

Acciones bioquímicas o fisiológicas

Negative elongation factor complex member B (NELFB) is a breast cancer-1 (BRCA1) binding protein which is overexpressed in upper gastrointestinal adenocarcinomas (UGC).In gastric cancer cell line, NELFB negatively control the activator protein-1 (AP-1) complex at the trefoil factor 1 (TFF1) promoter. NELFB plays an important role in stalling RNA polymerase II after transcription initiation. It binds to the estrogen receptor and recruits the other subunits of the negative elongation factor (NELF) complex to inhibit transcription elongation.

Características y beneficios

Prestige Antibodies® are highly characterized and extensively validated antibodies with the added benefit of all available characterization data for each target being accessible via the Human Protein Atlas portal linked just below the product name at the top of this page. The uniqueness and low cross-reactivity of the Prestige Antibodies® to other proteins are due to a thorough selection of antigen regions, affinity purification, and stringent selection. Prestige antigen controls are available for every corresponding Prestige Antibody and can be found in the linkage section.

Every Prestige Antibody is tested in the following ways:
  • IHC tissue array of 44 normal human tissues and 20 of the most common cancer type tissues.
  • Protein array of 364 human recombinant protein fragments.

Ligadura / enlace

Corresponding Antigen APREST75421

Forma física

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide

Información legal

Prestige Antibodies is a registered trademark of Merck KGaA, Darmstadt, Germany

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

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable


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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Visite la Librería de documentos

Patricia A McChesney et al.
Cancer research, 66(3), 1346-1353 (2006-02-03)
Cofactor of BRCA1 (COBRA1) is a newly characterized member of the negative elongation factor (NELF) complex. In this work, we show that COBRA1 is overexpressed in the majority of primary upper gastrointestinal adenocarcinomas (UGC), and its overexpression correlates with down-regulation
Min Luo et al.
The Journal of biological chemistry, 288(47), 34055-34072 (2013-10-08)
NELF-B is a BRCA1-interacting protein and subunit (with NELF-A, -C/D, and -E) of the human negative elongation factor (NELF) complex, which participates in RNA polymerase II pausing shortly after transcription initiation, especially for synchronized gene expression. We now report new

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