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Key Documents

06-886-I

Sigma-Aldrich

Anti-NFκB p50 Antibody

from rabbit, purified by affinity chromatography

Synonym(s):

Nuclear factor NF-kappa-B p105 subunit, NFκB p50, DNA-binding factor KBF1, EBP-1, Nuclear factor of kappa light polypeptide gene enhancer in B-cells 1

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About This Item

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

biological source

rabbit

Quality Level

antibody form

affinity isolated antibody

antibody product type

primary antibodies

clone

polyclonal

purified by

affinity chromatography

species reactivity

human

species reactivity (predicted by homology)

rhesus macaque (based on 100% sequence homology)

packaging

antibody small pack of 25 μg

technique(s)

immunoprecipitation (IP): suitable
western blot: suitable

NCBI accession no.

UniProt accession no.

shipped in

ambient

target post-translational modification

unmodified

Gene Information

human ... NFKB1(4790)

General description

Nuclear factor NF-kappa-B p105 subunit (UniProt P19838; also known as DNA-binding factor KBF1, EBP-1, NF-kappa-B, NF-kappaB, NF-kB1, NFkappaB, NFKB-p105, NFKB-p50, Nuclear factor NF-kappa-B p50 subunit, Nuclear factor kappa-B DNA binding subunit, Nuclear factor of kappa light polypeptide gene enhancer in B-cells 1) is encoded by the NFKB1 gene (Gene ID 4790) in human. NF-κB is a protein complex that plays a key role in regulating the immune response to infection/inflammation. NF-κB1 is synthesized as a 968 a.a protein (p105), which undergoes posttranslational processing to generate the p50 subunit (a.a. 1-433). The p50 NF-κB participates in target gene transactivation by forming heterodimers with RelA, RelB, or c-Rel. In addition, p50 homodimer can bind the nuclear protein Bcl-3 and form a functional transcriptional activator complex. In unstimulated cells, the NF-κB dimers are sequestered in the cytoplasm by the family of IκB (Inhibitor of κB) proteins (IκBα, IκBβ, IκBε, and Bcl-3). Upon stimulation, IκB becomes phosphorylated by the IκB kinase (IKK) complex, leading to IκB ubiquitination and proteasomal degradation. With the degradation of IκB, the NF-κB complex is then freed to enter the nucleus to activate the transcription of target genes.

Specificity

Dectects 105 kDa recursor and 50 kDa processed forms. Immunogen sequence is a.a. 1-12, this polyclonal antibody can therefore detect isoforms 1 and 2, but not 3. Note that isoform 3 is missing amino acids 1-180.

Immunogen

Epitope: Amino acid 1-12
KLH conjugated synthetic peptide (MAEDDPYLGRPE-C) corresponding to amino acids 1-12 of NFκB p50, containing a C-terminal cysteine.

Application

Anti-NFκB p50 Antibody is an antibody against NFκB p50 for use in Western Blotting, Immunoprecipitation.
Immunoprecipitation Analysis: 10 µg of antibody from a representative lot immunoprecipitated NFkB p50 in 500 µg of A431 cell lysate.

Quality

Evaluated by Western Blotting in A431 cell lysate.

Western Blotting Analysis: 0.2 µg/mL of this antibody detected NFkB p50 in 10 µg of A431 cell lysate.

Target description

~50/105 kDa observed

Other Notes

Concentration: Please refer to lot specific datasheet.

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