Delta-1-catenin and Delta-2-catenin are members of a subfamily of proteins with ten Armadillo-repeats. Delta-2-catenin is expressed in the brain where it is important for normal cognitive development. Like beta-catenin and gamma-catenin, delta-catenins seem to interact with Presenilins. These catenin-presenilin interaction have implications for cadherin function and regulation of cell-to-cell adhesion. While beta-catenin acts as a transcription regulatory protein in the Wnt/TCF pathway, delta-catenin 1 has been implicated as a regulator of the NF-κB transcription factor. Palmitoylation of delta-catenin seems to coordinate activity-dependent changes in synaptic adhesion molecules, synapse structure, and receptor localizations that are involved in memory formation.
Background References
1. Israely I, Costa RM, Xie CW, Silva AJ, Kosik KS, Liu X. Deletion of the neuron-specific protein delta-catenin leads to severe cognitive and synaptic dysfunction. Curr Biol. 2004 Sep 21;14(18):1657-63.
2. Rubio ME, Curcio C, Chauvet N, Brusés JL. Assembly of the N-cadherin complex during synapse formation involves uncoupling of p120-catenin and association with presenilin 1. Mol Cell Neurosci. 2005 Dec;30(4):611-23.
Western blot analysis of Delta-catenin on different lysates with Rabbit anti-Delta-catenin antibody (HA500428) at 1/500 dilution.
Lane 1: Human brain tissue lysate(20 µg/Lane) Lane 2: Mouse brain tissue lysate (20 µg/Lane) Lane 3: Rat brain tissue lysate (20 µg/Lane)
Predicted band size: 133 kDa Observed band size: 133 kDa
Exposure time: 1 minute;
8% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA500428) at 1/500 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1:300,000 dilution was used for 30 minutes at room temperature.
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