Rabbit Polyclonal Phospho-NFkappaB-p105 (S927) antibody (STJ91022)


Reactivity: Human, Mouse
Applications: WB, IHC, IF, ELISA
Conjugation: Unconjugated
Supplier: St John’s Laboratory Ltd.

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Rabbit Polyclonal Phospho-NFkappaB-p105 (S927) antibody (STJ91022)

Supplier: St John’s Laboratory Ltd.

Recommended applications: WB, IHC, IF, ELISA

Recommended dilution: WB 1:500-1:2000; IHC 1:100-1:300; IF 1:200-1:1000; ELISA 1:20000;

Recommended protocols: check protocols

Image descriptions:

Click or hover above images to see image description for NFkappaB-p105 (phospho Ser927) Polyclonal Antibody.

Alternative names:

Check alternative names for the antibody


NFKB1 antibody,|DKFZp686C01211 antibody|DNA binding factor KBF1 antibody|DNA binding factor KBF1 EBP1 antibody|DNA-binding factor KBF1 antibody|EBP 1 antibody|EBP-1 antibody|EBP1 antibody|KBF1 antibody|MGC54151 antibody|NF kappa B antibody|NF kappaB antibody|NF kappabeta antibody|NF kB1 antibody|NFkappaB antibody|NFKB 1 antibody|NFKB p105 antibody|NFKB p50 antibody|Nfkb1 antibody|NFKB1_HUMAN antibody|Nuclear factor kappa B DNA binding subunit antibody|Nuclear factor kappa-B, subunit 1 antibody|Nuclear factor NF kappa B p105 subunit antibody|Nuclear factor NF kappa B p50 subunit antibody|Nuclear factor NF-kappa-B p50 subunit antibody|Nuclear factor of kappa light chain gene enhancer in B cells 1 antibody|Nuclear factor of kappa light polypeptide gene enhancer in B cells 1 antibody|Nuclear factor of kappa light polypeptide gene enhancer in B-cells 1 antibody|p105 antibody|p50 antibody|p84/NF-kappa-B1 p98 antibody|Transcription factor NFKB1 antibody|Anti-NFkB p105 / p50 antibody [E381] (ab32360)
SCBT cat No: sc-1192|



NFkappaB-p105 (phospho Ser927) Polyclonal Antibody

Catalogue No.



Human, Mouse


Phospho-NFkappaB-p105 (S927) Polyclonal Antibody detects endogenous levels of NFkappaB-p105 protein only when phosphorylated at S927.


Synthesized phospho-peptide derived from NFkappaB-p105 (phospho Ser927) at AA range 870-950





Recommended dilution

WB 1:500-1:2000; IHC 1:100-1:300; IF 1:200-1:1000; ELISA 1:20000;







Molecular weight

110 kDa


NFkappaB-p105 (phospho Ser927) Antibody was tube-contained. Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.


1 mg/ml


NFkappaB-p105 (phospho Ser927) Antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.


-20 Celsius degree. Avoid repeated freeze/thaw cycles.

Alternative antibody names

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

Database links

Human UniProt/Swiss-Prot:P19838;Mouse UniPort/Swiss-Prot: P25799;Rat UniProt/Swiss-Port: F1LQH2;Human Entrez Gene: 4790;Mouse Entrez Gene: 18033;Rat Entrez Gene: Rn.2411

Protein names

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

Protein function

NF-kappa-B is a pleiotropic transcription factor present in almost all cell types and is the endpoint of a series of signal transduction events that are initiated by a vast array of stimuli related to many biological processes such as inflammation, immunity, differentiation, cell growth, tumorigenesis and apoptosis. NF-kappa-B is a homo- or heterodimeric complex formed by the Rel-like domain-containing proteins RELA/p65, RELB, NFKB1/p105, NFKB1/p50, REL and NFKB2/p52 and the heterodimeric p65-p50 complex appears to be most abundant one. The dimers bind at kappa-B sites in the DNA of their target genes and the individual dimers have distinct preferences for different kappa-B sites that they can bind with distinguishable affinity and specificity. Different dimer combinations act as transcriptional activators or repressors, respectively. NF-kappa-B is controlled by various mechanisms of post-translational modification and subcellular compartmentalization as well as by interactions with other cofactors or corepressors. NF-kappa-B complexes are held in the cytoplasm in an inactive state complexed with members of the NF-kappa-B inhibitor (I-kappa-B) family. In a conventional activation pathway, I-kappa-B is phosphorylated by I-kappa-B kinases (IKKs) in response to different activators, subsequently degraded thus liberating the active NF-kappa-B complex which translocates to the nucleus. NF-kappa-B heterodimeric p65-p50 and RelB-p50 complexes are transcriptional activators. The NF-kappa-B p50-p50 homodimer is a transcriptional repressor, but can act as a transcriptional activator when associated with BCL3. NFKB1 appears to have dual functions such as cytoplasmic retention of attached NF-kappa-B proteins by p105 and generation of p50 by a cotranslational processing. The proteasome-mediated process ensures the production of both p50 and p105 and preserves their independent function, although processing of NFKB1/p105 also appears to occur post-translationally. p50 binds to the kappa-B consensus sequence 5′-GGRNNYYCC-3′, located in the enhancer region of genes involved in immune response and acute phase reactions. In a complex with MAP3K8, NFKB1/p105 represses MAP3K8-induced MAPK signaling; active MAP3K8 is released by proteasome-dependent degradation of NFKB1/p105.

Protein tissue specificity

By phorbol ester and TNF.

Involvement in disease

Immunodeficiency, common variable, 12 (CVID12) [MIM:616576]: A primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen. . Note: The disease is caused by mutations affecting the gene represented in this entry.

Protein sequence and domain

The C-terminus of p105 might be involved in cytoplasmic retention, inhibition of DNA-binding, and transcription activation. / Glycine-rich region (GRR) appears to be a critical element in the generation of p50. / Contains 7 ANK repeats. / Contains 1 death domain. / Contains 1 RHD (Rel-like) domain.

Protein post-translational modifications

While translation occurs, the particular unfolded structure after the GRR repeat promotes the generation of p50 making it an acceptable substrate for the proteasome. This process is known as cotranslational processing. The processed form is active and the unprocessed form acts as an inhibitor (I kappa B-like), being able to form cytosolic complexes with NF-kappa B, trapping it in the cytoplasm. Complete folding of the region downstream of the GRR repeat precludes processing. / Phosphorylation at ‘Ser-903’ and ‘Ser-907’ primes p105 for proteolytic processing in response to TNF-alpha stimulation. Phosphorylation at ‘Ser-927’ and ‘Ser-932’ are required for BTRC/BTRCP-mediated proteolysis. / Polyubiquitination seems to allow p105 processing. / S-nitrosylation of Cys-61 affects DNA binding. / The covalent modification of cysteine by 15-deoxy-Delta12,14-prostaglandin-J2 is autocatalytic and reversible. It may occur as an alternative to other cysteine modifications, such as S-nitrosylation and S-palmitoylation.

Protein cellular localization

Nucleus / Cytoplasm

Research area

All research areas>Transcription Regulators>NF kappa B
(View all antibody categories related to Transcription Regulators)


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St John’s Laboratory Ltd.

Product type

Primary antibody


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