JNK2 Antibody (YA326)

JNK2 Antibody (YA326) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to JNK2.

JNK2, a serine/threonine-protein kinase, is a central player in diverse cellular processes, encompassing cell proliferation, differentiation, migration, transformation, and programmed cell death. Activation of the stress-activated protein kinase/c-Jun N-terminal kinase (SAP/JNK) signaling pathway by extracellular stimuli, such as pro-inflammatory cytokines or physical stress, involves the phosphorylation and activation of JNK2 by dual specificity kinases MAP2K4/MKK4 and MAP2K7/MKK7. Within this cascade, JNK2 phosphorylates critical transcription factors, particularly components of AP-1 like JUN and ATF2, thereby modulating AP-1 transcriptional activity. In response to oxidative or ribotoxic stresses, JNK2 inhibits rRNA synthesis by phosphorylating and inactivating the RNA polymerase 1-specific transcription initiation factor RRN3. Additionally, JNK2 plays a crucial role in stressed cell apoptosis by phosphorylating key regulatory factors, including TP53 and YAP1. In T-cells, JNK2, along with MAPK8, is essential for the polarized differentiation of T-helper cells into Th1 cells. Furthermore, upon T-cell receptor (TCR) stimulation, JNK2 is activated to regulate JUN protein levels by interacting with CARMA1, BCL10, MAP2K7, and MAP3K7/TAK1. JNK2 is also instrumental in osmotic stress-induced disruption of epithelial tight junctions and, when activated, promotes beta-catenin/CTNNB1 degradation, thereby inhibiting the canonical Wnt signaling pathway. Additionally, JNK2 participates in neurite growth in spiral ganglion neurons and phosphorylates the CLOCK-BMAL1 heterodimer, contributing to the regulation of the circadian clock. Notably, JNK2 isoforms exhibit distinct binding patterns, with alpha-1 and alpha-2 preferentially binding to JUN, while beta-1 and beta-2 bind to ATF2. However, phosphorylation efficiency remains consistent across all isoforms, and JUNB is not a substrate for JNK2 alpha-2, with JUND binding only weakly to it.

Free

P45984

Predicted band size: 48/44 kDa; Observed band size: 48/44 kDa

Protein A affinity purified.

Cytoplasm, Nucleus.

Non-conjugated

Unmodified

AB_3102344

Signal Transduction

Primary Antibody; Recombinant Rabbit Monoclonal Antibody

Recombinant, Monoclonal

Rabbit

Human, Mouse

WB: 1:1,000-1:5,000; ICC: 1:50-1:200; IHC-P: 1:50-1:200; FC: 1:50-1:100; IP: Use at an assay dependent concentration.

WB, ICC/IF, IHC-P, IP, FC

Liquid

Supplied in 1*TBS (pH7.4), 0.05% BSA and 40% Glycerol. Preservative: 0.05% Sodium Azide.

Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.

Shipping with blue ice.

IgG

Endogenous

Synthetic peptide corresponding to Human JNK2.AA range:341-394.