NFkB p105/p50 (phospho S907) Polyclonal Antibody

Target Information

Target Name	NFkB p105/p50 (phospho S907)
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 within Human NFkB p105/ p50 (phospho S907).
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 polyclonal antibody to NFkB p105 / p50 (phospho S907).
Host Species	Rabbit
Clonality	Polyclonal
Purity	Immunogen affinity purified
Isotype	IgG
Conjugation	Unconjugated
Reactivity	Human
Immunogen	Synthetic peptide within Human NFkB p105/ p50 (phospho S907).
Positive Control	TNF-alpha treated Hela cells, breast carcinoma tissue
Application	IHC-P, WB

Storage & Handling

Shipping	Shipped at 4 °C.
Storage	Short term: 4 °C. Long term: -20 °C
Storage Buffer	pH: 7.30 Preservative: 0.02% Sodium Azide Constituent: 49% PBS, 50% Glycerol
Handling	Avoid freeze-thaw cycles.