NFκB-p65(Phospho Ser281) Polyclonal Antibody

SKU:BHA12107041
Overview
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RELA-specific polyclonal antibody raised in Rabbit. Validated for Immunohistochemistry, Immunofluorescence, ELISA in Human, Mouse, Rat samples. Phospho-specific. Affinity-purified rabbit IgG.
Specificity Phospho-Specific
Immunogen Synthetic Peptide
Molecular Weight ~60.2 kDa
UniProt Q04206
Gene ID Human: 5970; Mouse: 19697
Applications 3 validated
Options selector
Catalog no. Size
BT-AP05831-20UL 20 uL
BT-AP05831-50UL 50 uL
BT-AP05831-100UL 100 uL
Available Options
Size
Field Specification
Mfr No BT-AP05831
Alternative Names Transcription factor p65; RELA; NFKB3; Transcription factor p65; Nuclear factor NF-kappa-B p65 subunit; Nuclear factor of kappa light polypeptide gene enhancer in B-cells 3
Clonality
  • Polyclonal
Concentration 1 mg/ml
Formulation Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Gene ID Human: 5970; Mouse: 19697
Host Rabbit
Immunogen The antiserum was produced against synthesized peptide derived from human NF-kappaB p65 around the phosphorylation site of Ser281. AA range:247-296
Isotype
  • IgG
Molecular Weight ~60.2 kDa
Product Type
  • Primary Antibody
Reactivity
  • Human
  • Mouse
  • Rat
Storage -20°C for 1 year
Target RELA

Product Overview

Primary Antibody

This antibody targets RELA and detects endogenous levels of RELA protein. Only detects the phosphorylated form of RELA.

Validated Applications

Application Dilution Guidance
Immunohistochemistry (IHC) Refer to datasheet for recommended working dilution
Immunofluorescence (IF) Refer to datasheet for recommended working dilution
ELISA Refer to datasheet for recommended working dilution
✔ Validated by Bioassay Technology Laboratory

Antibody Specifications

Target RELA
Host Rabbit
Clonality Polyclonal
Isotype IgG
Reactivity Human, Mouse, Rat
Purification Affinity Purification
Molecular Weight ~60.2 kDa
Concentration 1 mg/ml
Immunogen The antiserum was produced against synthesized peptide derived from human NF-kappaB p65 around the phosphorylation site of Ser281. AA range:247-296
Formulation Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Storage -20°C for 1 year
Gene ID Human: 5970; Mouse: 19697
UniProt Q04206 (Human: Q04206; Mouse: Q04207)

Scientific Background

NF-kappa-B is a ubiquitous transcription factor involved in several biological processes. It is held in the cytoplasm in an inactive state by specific inhibitors. Upon degradation of the inhibitor| NF-kappa-B moves to the nucleus and activates transcription of specific genes. NF-kappa-B is composed of NFKB1 or NFKB2 bound to either REL| RELA| or RELB. The most abundant form of NF-kappa-B is NFKB1 complexed with the product of this gene| RELA. Four transcript variants encoding different isoforms have been found for this gene.

Alternative Names

Transcription factor p65; RELA; NFKB3; Transcription factor p65; Nuclear factor NF-kappa-B p65 subunit; Nuclear factor of kappa light polypeptide gene enhancer in B-cells 3

Safety & Handling

⚠ Research Use Only (RUO). Not approved for diagnostic or therapeutic use. Handle with standard laboratory safety precautions. Contains sodium azide — avoid contact with skin/eyes; dispose per local regulations.
TargetRELA
HostRabbit
ClonalityPolyclonal
IsotypeIgG
ReactivityHuman, Mouse, Rat
PurificationAffinity Purification
Molecular Weight~60.2 kDa
Concentration1 mg/ml
ImmunogenThe antiserum was produced against synthesized peptide derived from human NF-kappaB p65 around the phosphorylation site of Ser281. AA range:247-296
FormulationLiquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Storage-20°C for 1 year
Gene IDHuman: 5970; Mouse: 19697
UniProtQ04206 (Human: Q04206; Mouse: Q04207)

Optimized working dilutions depend on sample type and detection system. Titration is recommended.

ApplicationDilution Note
Immunohistochemistry (IHC)Refer to datasheet for recommended working dilution
Immunofluorescence (IF)Refer to datasheet for recommended working dilution
ELISARefer to datasheet for recommended working dilution

NF-kappa-B is a ubiquitous transcription factor involved in several biological processes. It is held in the cytoplasm in an inactive state by specific inhibitors. Upon degradation of the inhibitor| NF-kappa-B moves to the nucleus and activates transcription of specific genes. NF-kappa-B is composed of NFKB1 or NFKB2 bound to either REL| RELA| or RELB. The most abundant form of NF-kappa-B is NFKB1 complexed with the product of this gene| RELA. Four transcript variants encoding different isoforms have been found for this gene.

Alternative Names

Transcription factor p65; RELA; NFKB3; Transcription factor p65; Nuclear factor NF-kappa-B p65 subunit; Nuclear factor of kappa light polypeptide gene enhancer in B-cells 3

What species does this antibody react with?
This antibody has been validated for reactivity against Human, Mouse, Rat. Actual cross-reactivity is determined by immunogen sequence homology across species. Contact technical support for unlisted species.
What applications has this antibody been validated for?
Validated applications include: Immunohistochemistry (IHC), Immunofluorescence (IF), ELISA. Each application was tested with positive and negative controls. Contact our team regarding applications not listed.
How was this antibody produced and purified?
This polyclonal IgG antibody was raised in rabbit against a synthesized target-specific peptide. It was affinity-purified from antiserum using an epitope-specific immunogen, yielding a highly specific antibody suitable for multiple research applications.
What is the expected molecular weight of RELA?
The predicted molecular weight of RELA is ~60.2 kDa. Band size may vary slightly depending on post-translational modifications and gel percentage.
What storage conditions does this antibody require?
Store at −20°C for long-term storage. Avoid repeated freeze-thaw cycles. Working aliquots can be stored at 4°C for short-term use. The formulation includes 50% glycerol as a cryoprotectant.
Is this antibody specific for the phosphorylated form of RELA?
Yes. This antibody is designed to detect RELA only at the phosphorylation site specified in the product name. Lambda phosphatase treatment eliminates the signal, confirming phospho-specificity.

Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.

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