NFkB p105/p50 Monoclonal Antibody

Target Information

Target Name	NFkB p105/p50
Uniprot ID	P19838
Cellular Localization	Nucleus. Cytoplasm. Nuclear, but also found in the cytoplasm in an inactive form complexed to an inhibitor.
Immunogen	Synthetic peptide.
Function	NF-kappa-B is a pleiotropic transcription factor which is present in almost all cell types and is involved in many biological processed 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.

Product Details

Description	Rabbit monoclonal antibody to NFkB p105 / p50.
Host Species	Rabbit
Clonality	Monoclonal
Purity	Protein A purified
Isotype	IgG
Conjugation	Unconjugated
Reactivity	Mouse, Rat, Human
Immunogen	Synthetic peptide.
Positive Control	WB: HeLa, MCF-7 and PC-12 cell lysates. IHC-P: human prostate carcinoma and bladder carcinoma tissues.
Application	IHC-P, WB

Storage & Handling

Shipping	Shipped at 4 °C.
Storage	Short term: 4 °C. Long term: -20 °C
Storage Buffer	pH: 7.20 Preservative: 0.01% Sodium Azide Constituent: 59% PBS, 40% Glycerol, 0.05% BSA
Handling	Avoid freeze-thaw cycles.