Rabbit anti-Human NFkB, p50, p105 Polyclonal Antibody | anti-NFKB1 antibody

NFkB, p50, p105 (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, Nuclear Factor NF-kappa-B p50 Subunit, NFKB1)

Cat. Num. AAA649307

• Gene Names: NFKB1; p50; KBF1; p105; EBP-1; NF-kB1; NFKB-p50; NFkappaB; NF-kappaB; NFKB-p105; NF-kappa-B
• Reactivity: Human
• Applications: Western Blot, Immunohistochemistry
• Purity: Affinity Purified; Purified by immunoaffinity chromatography.
• Synonyms: NFkB; p50; p105; Polyclonal Antibody; p105 (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; Nuclear Factor NF-kappa-B p50 Subunit; NFKB1); Anti -NFkB; anti-NFKB1 antibody

• Host: Rabbit
• Reactivity: Human
• Clonality: Polyclonal
• Isotype: IgG
• Specificity: Recognizes human NF-kB p105, p50.
• Purity/Purification: Affinity Purified; Purified by immunoaffinity chromatography.
• Form/Format: Supplied as a liquid in PBS, pH 7.4, 150mM sodium chloride, 0.02% sodium azide, 50% glycerol.

• Applicable Applications for anti-NFKB1 antibody: Western Blot (WB), Immunohistochemistry (IHC)
• Application Notes: Suitable for use in Western Blot and Immunohistochemistry.; Dilution: Western Blot: 1:500-1:1000; Immunohistochemistry: 1:50-1:100
• Immunogen: Synthetic non-phosphopeptide corresponding to human NF-kB p105, p50 around the phosphorylation site of serine 893 (A-S-SP-P-V).
• Preparation and Storage: May be stored at 4 degree C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degree C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Related Product Information for anti-NFKB1 antibody

NF-kB regulates the expression of a large number of genes that play critical roles in apoptosis, viral replication, tumorigenesis, various autoimmune diseases and inflammation. The active nuclear form of the NF-kB transcription factor complex is composed of two DNA binding subunits, NF-kB p65 and p50, both of which share extensive N-terminal sequence homology with the v-rel oncogene product. N-terminal regions of p50 and p65 are critical for DNA binding and help determine the DNA-binding specificities of p50 and p65. Human NF-kB p105/p50 gene is mapped to chromosome 4q24.

Product Categories/Family for anti-NFKB1 antibody

Antibodies; Abs to Transcription Factors

NCBI and Uniprot Product Information

• NCBI GI #: 34577122
• NCBI GeneID: 4790
• NCBI Accession #: NP_003989.2
• NCBI GenBank Nucleotide #: NM_003998.3
• UniProt Accession #: P19838; Q68D84; Q86V43; Q8N4X7; Q9NZC0; A8K5Y5; B3KVE8
• Molecular Weight: 105,356 Da
• NCBI Official Full Name: nuclear factor NF-kappa-B p105 subunit isoform 1
• NCBI Official Synonym Full Names: nuclear factor of kappa light polypeptide gene enhancer in B-cells 1
• NCBI Official Symbol: NFKB1
• NCBI Official Synonym Symbols: p50; KBF1; p105; EBP-1; NF-kB1; NFKB-p50; NFkappaB; NF-kappaB; NFKB-p105; NF-kappa-B
• NCBI Protein Information: nuclear factor NF-kappa-B p105 subunit; NF-kappabeta; DNA binding factor KBF1; DNA-binding factor KBF1; nuclear factor NF-kappa-B p50 subunit; nuclear factor kappa-B DNA binding subunit
• UniProt Protein Name: Nuclear factor NF-kappa-B p105 subunit
• Protein Family: Nuclear factor
• UniProt Gene Name: NFKB1
• UniProt Entry Name: NFKB1_HUMAN

NCBI Description

This gene encodes a 105 kD protein which can undergo cotranslational processing by the 26S proteasome to produce a 50 kD protein. The 105 kD protein is a Rel protein-specific transcription inhibitor and the 50 kD protein is a DNA binding subunit of the NF-kappa-B (NFKB) protein complex. NFKB is a transcription regulator that is activated by various intra- and extra-cellular stimuli such as cytokines, oxidant-free radicals, ultraviolet irradiation, and bacterial or viral products. Activated NFKB translocates into the nucleus and stimulates the expression of genes involved in a wide variety of biological functions. Inappropriate activation of NFKB has been associated with a number of inflammatory diseases while persistent inhibition of NFKB leads to inappropriate immune cell development or delayed cell growth. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

Uniprot Description

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. Ref.35

Subunit structure: Component of the NF-kappa-B p65-p50 complex. Component of the NF-kappa-B p65-p50 complex. Homodimer; component of the NF-kappa-B p50-p50 complex. Component of the NF-kappa-B p105-p50 complex. Component of the NF-kappa-B p50-c-Rel complex. Component of a complex consisting of the NF-kappa-B p50-p50 homodimer and BCL3. Also interacts with MAP3K8. NF-kappa-B p50 subunit interacts with NCOA3 coactivator, which may coactivate NF-kappa-B dependent expression via its histone acetyltransferase activity. Interacts with DSIPI; this interaction prevents nuclear translocation and DNA-binding. Interacts with SPAG9 and UNC5CL. NFKB1/p105 interacts with CFLAR; the interaction inhibits p105 processing into p50. NFKB1/p105 forms a ternary complex with MAP3K8 and TNIP2. Interacts with GSK3B; the interaction prevents processing of p105 to p50. NFKB1/p50 interacts with NFKBIE. NFKB1/p50 interacts with NFKBIZ. Nuclear factor NF-kappa-B p50 subunit interacts with NFKBID

By similarity. Directly interacts with MEN1. Interacts with HIF1AN. Ref.10 Ref.12 Ref.15 Ref.17 Ref.18 Ref.20 Ref.22 Ref.25 Ref.26 Ref.28 Ref.30 Ref.32 Ref.33 Ref.34 Ref.35 Ref.36 Ref.37

Subcellular location: Nucleus. Cytoplasm. Note: Nuclear, but also found in the cytoplasm in an inactive form complexed to an inhibitor (I-kappa-B).

Induction: By phorbol ester and TNF.

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.

Post-translational modification: 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.

Sequence similarities: Contains 7 ANK repeats.Contains 1 death domain.Contains 1 RHD (Rel-like) domain.