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- Table of Contents
NELFB antibody (A12025-1) performs well in ELISA, WB and shows reactivity with Human, Mouse, Rat.
- Validated for inter-lot consistency, specificity, and reproducibility
- Committed to quality since 1993
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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.
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.
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Anti-COBRA1/NELFB Antibody Picoband®
NELFB antibody
| Reactive Species | Host | Application |
|---|---|---|
| Human, Mouse, Rat | Rabbit | ELISA, WB |
Tested Applications
NELFB antibody was positively detected by WB in:
rat kidney tissue, mouse kidney tissue, human MDA-MB-231 whole cell
Suggested blocking solution with 5% non-fat milk or BSA; (*)Recommended protein loading: 20-40 ug per lane
Recommend Dilution
Application
Dilution
Species
Western blot
0.1-0.5μg/ml
ELISA
0.1-0.5μg/ml
* It is recommended to optimize the amount of this reagent in each experimental system to achieve the best results.
Reactive Data
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WB
ELISA
Rat
Tested
Recommend
Mouse
Tested
Recommend
Human
Tested
Recommend
Product Information
Product Name
Anti-COBRA1/NELFB Antibody Picoband®
View all NELFB Antibodies
View all NELFB Antibodies
Form
Lyophilized
Uniprot
Gene ID
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.
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).
Cross-Reactivity
No cross-reactivity with other proteins.
Reconstitution
Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
Observed Molecular Weight
66 kDa
Calculated Molecular Weight
65.7 kDa
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.
Cite This Product
Anti-COBRA1/NELFB Antibody Picoband® (Boster Biological Technology, Pleasanton CA, USA, Catalog # A12025-1)
Protocols
Western Blot protocol for NELFB antibody
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Product Promise
We promise Anti-COBRA1/NELFB Antibody Picoband® performs excellently in relevant applications for ELISA, WB. If it doesn't perform as promised, we will refund the product. Learn more
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A12025-1
Buy one primary antibody get one 0.5ml HRP or Biotin secondary antibody for free.
*Sample sizes are prepared on demand and will take extra lead time. (cannot be conjugated)
$370.00
Troubleshooting
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Guaranteed product quality
We promise all of our products perform as described in datasheets.
This product is for Research Use Only. Not for use in diagnostic procedures.
Update date:
Oct 11, 2026