Anti-COBRA1/NELFB Antibody Picoband™

Product Name

Anti-COBRA1/NELFB Antibody Picoband™

View all NELFB Antibodies

SKU/Catalog Number

A12025-1

Size

100 μg/vial

Form

Lyophilized

Description

Boster Bio Anti-COBRA1/NELFB Antibody Picoband™ catalog # A12025-1. Tested in ELISA, WB applications. This antibody reacts with Human, Mouse, Rat.

Storage & Handling

Store at -20˚C for one year from date of receipt. After reconstitution, at 4˚C for one month. It can also be aliquotted and stored frozen at -20˚C for six months. Avoid repeated freeze-thaw cycles.

Cite This Product

Anti-COBRA1/NELFB Antibody Picoband™ (Boster Biological Technology, Pleasanton CA, USA, Catalog # A12025-1)

Host

Rabbit

Contents

Each vial contains 4mg Trehalose, 0.9mg NaCl, 0.2mg Na₂HPO₄, 0.05mg NaN₃.

Clonality

Polyclonal

Isotype

Rabbit IgG

Immunogen

E. coli-derived human COBRA1 recombinant protein (Position: M1-E252).

*Blocking peptide can be purchased. Costs vary based on immunogen length. Contact us for pricing.

Cross-reactivity

No cross-reactivity with other proteins.

Reactive Species

A12025-1 is reactive to NELFB in Human, Mouse, Rat

Applications

A12025-1 is guaranteed for ELISA, WB Boster Guarantee

Observed Molecular Weight

66 kDa

Calculated molecular weight

65.697kDa

Background of NELFB

Cofactor of BRCA1, also known as COBRA1, is a human gene that encodes NELF-B. NELF-B is a subunit of negative elongation factor (NELF), which also includes NELF-A (WHSC2), either NELF-C or NELF-D (TH1L), and NELF-E (RDBP). NELF acts with DRB sensitivity-inducing factor (DSIF), a heterodimer of SPT4 (SUPT4H1) and SPT5 (SUPT5H), to cause transcriptional pausing of RNA polymerase II. COBRA1 was initially identified in a yeast two-hybrid screen using the BRCT1 domain of BRCA1 as bait.

Antibody Validation

Boster validates all antibodies on WB, IHC, ICC, Immunofluorescence, and ELISA with known positive control and negative samples to ensure specificity and high affinity, including thorough antibody incubations.

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Reconsitution

Add 0.2ml of distilled water will yield a concentration of 500ug/ml.

Assay Dilutions Recommendation

The recommendations below provide a starting point for assay optimization. The actual working concentration varies and should be decided by the user.

Western blot, 0.1-0.5μg/ml
Direct ELISA, 0.1-0.5μg/ml

Validation Images & Assay Conditions

Click image to see more details

Figure 1. Western blot analysis of COBRA1 using anti-COBRA1 antibody (A12025-1).
Electrophoresis was performed on a 5-20% SDS-PAGE gel at 70V (Stacking gel) / 90V (Resolving gel) for 2-3 hours. The sample well of each lane was loaded with 50ug of sample under reducing conditions.
Lane 1: rat kidney tissue lysates,
Lane 2: mouse kidney tissue lysates,
Lane 3: human MDA-MB-231 whole cell lysates.
After Electrophoresis, proteins were transferred to a Nitrocellulose membrane at 150mA for 50-90 minutes. Blocked the membrane with 5% Non-fat Milk/ TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-COBRA1 antigen affinity purified polyclonal antibody (Catalog # A12025-1) at 0.5 μg/mL overnight at 4℃, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:10000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. A specific band was detected for COBRA1 at approximately 66KD. The expected band size for COBRA1 is at 66KD.

Gene/Protein Information For NELFB (Source: Uniprot.org, NCBI)

Alternative Names

Negative elongation factor B NELFB COBRA1, NELF-B negative elongation factor complex member B negative elongation factor B|cofactor of BRCA1|negative elongation factor protein B

For more info on NELFB, check out the NELFB Infographic

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In this infographic, you will see the following information for NELFB: database IDs, superfamily, protein function, synonyms, molecular weight, chromosomal locations, tissues of expression, subcellular locations, post-translational modifications, and related diseases, research areas & pathways. If you want to see more information included, or would like to contribute to it and be acknowledged, please contact [email protected].

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