PAK1, a member of the STE20 subfamily of Ser/Thr protein kinases, acts on a variety of targets. It is likely to be the GTPase effector that links the Rho-related GTPases to the JNK MAP kinase pathway. Activity is inhibited in cells undergoing apoptosis, potentially due to binding of CDC2L1 and CDC2L2. The protein interacts tightly with GTP-bound but not GDP-bound CDC42/P21 and RAC1. PAK1 binds to the caspase-cleaved p110 isoform of CDC2L1 and CDC2L2, p110C, but not the full-length proteins. It is a component of cytoplasmic complexes, which also contain PXN, ARHGEF6 and GIT1. The protein is autophosphorylated when activated by CDC42/p21. Structurally, the PAK1 contains 1 CRIB domain.1) Chen, S., et al., J. Biol. Chem. 278(22):20029-20036 (2003). More
This PAK1 antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 401-430 amino acids from human PAK1.
IFIHC-PWB
Human
Formalin-fixed and paraffin-embedded human colon carcinoma tissue reacted with PAK1 Antibody (T423) , which was peroxidase-conjugated to the secondary antibody, followed by DAB staining.
Confocal immunofluorescent analysis of PAK1 Antibody (T423) with Hela cell followed by Alexa Fluor 488-conjugated goat anti-rabbit lgG (green). Actin filaments have been labeled with Alexa Fluor 555 phalloidin (red).
Western blot analysis of PAK1 using rabbit polyclonal PAK1 Antibody (T423).293 cell lysates (2 ug/lane) either nontransfected (Lane 1) or transiently transfected with the PAK1 gene (Lane 2).
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