JNK1 overexpression 293T lysate (whole cell)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

JNK1 also known as c-Jun N-terminal kinase 1 is a member of the mitogen-activated protein kinase (MAPK) family with a molecular weight of approximately 46 kDa. It is expressed in various tissues throughout the body including the brain heart liver and skeletal muscle. JNK1 exists in multiple isoforms due to alternative splicing. The JNK1 protein is activated by dual phosphorylation on threonine and tyrosine residues a process integral to its function as a stress-activated protein kinase. Commonly used research tools include JNK antibodies and phospho JNK antibodies which help detect the activated forms of this kinase during cellular studies.

Biological function summary

This kinase plays an important role in processes such as inflammation apoptosis and cellular stress responses. JNK1 is not just an isolated enzyme. It forms complexes with other proteins under specific conditions facilitating diverse cellular responses. For example JNK1 activation influences transcription factors like c-Jun by phosphorylating them impacting gene expression related to cell survival and death. This activity establishes JNK1 as a significant player in routine cell functioning and response to external environmental stressors.

Pathways

The kinase is part of the MAPK signaling pathways and the stress-activated protein kinase (SAPK) pathways. These pathways involve multiple signaling cascades important for transmitting extracellular signals into the cellular environment. JNK1 interacts with proteins like MKK4 and MKK7 which are upstream activators and ATF2 a downstream target. This positioning makes JNK1 an essential signaling node that translates extracellular stressors into cellular responses providing adaptability to cells amidst changing conditions.

JNK1 has connections to disorders such as cancer and neurodegenerative diseases. Abnormal activation of JNK1 can lead to irregular cell proliferation making it pertinent in cancer. Similarly in neurodegenerative diseases like Alzheimer's JNK1's involvement in neuronal apoptosis turns critical. It regulates tau phosphorylation connecting JNK1 with tauopathies observed in Alzheimer's disease. Researchers often investigate these associations to understand the mechanisms that underpin these conditions and develop targeted therapies.