Anti-MEK3

Three alternatively spliced transcript variants of MEK3 encoding distinct isoforms have been reported. Isoform B utilizes a different start codon compared to isoform C resulting in the production of a N-terminal segment of isoform B which is shorter and distinct from isoform C . MEK3b is the predominant form of MEK3 and strongly activates p38 MAP kinase . Protein function: Dual specificity kinase. Is activated by cytokines and environmental stress in vivo. Catalyzes the concomitant phosphorylation of a threonine and a tyrosine residue in the MAP kinase p38. Part of a signaling cascade that begins with the activation of the adrenergic receptor ADRA1B and leads to the activation of MAPK14. [The UniProt Consortium] Recommended dilutions: IHC 1:100-200. Cellular localization: Cytosol,Nucleus