Carboxyl Terminus of Plakophilin-1 Recruits It to Plasma Membrane, whereas Amino Terminus Recruits Desmoplakin and Promotes Desmosome Assembly

Rho inhibition recruits DCC to the neuronal plasma membrane and enhances axon chemoattraction to netrin 1.

Molecular cues, such as netrin 1, guide axons by influencing growth cone motility. Rho GTPases are a family of intracellular proteins that regulate the cytoskeleton, substrate adhesion and vesicle trafficking. Activation of the RhoA subfamily of Rho GTPases is essential for chemorepellent axon guidance; however, their role during axonal chemoattraction is unclear. Here, we show that netrin 1, t...

Desmoplakin regulates desmosome hyperadhesion

The skin is subjected to continuous physical stress. Keratinocytes resist mechanical stress by tethering the tension-bearing keratin intermediate filament cytoskeleton to sites of intercellular contact known as desmosomes (Garrod and Chidgey, 2008; Green and Simpson, 2007). The plakin protein desmoplakin (DP) is an obligate desmosomal constituent necessary for keratin anchorage at cell-cell con...

DUX4 recruits p300/CBP through its C-terminus and induces global H3K27 acetylation changes

Ectopic expression of the double homeodomain transcription factor DUX4 causes facioscapulohumeral muscular dystrophy (FSHD). Mechanisms of action of DUX4 are currently unknown. Using immortalized human myoblasts with a titratable DUX4 transgene, we identify by mass spectrometry an interaction between the DUX4 C-terminus and the histone acetyltransferases p300/CBP. Chromatin immunoprecipitation ...

Palmitoylation of plakophilin is required for desmosome assembly.

Desmosomes are prominent adhesive junctions found in various epithelial tissues. The cytoplasmic domains of desmosomal cadherins interact with a host of desmosomal plaque proteins, including plakophilins, plakoglobin and desmoplakin, which, in turn, recruit the intermediate filament cytoskeleton to sites of cell-cell contact. Although the individual components of the desmosome are known, mechan...

Palmitoylation of plakophilin is required for desmosome assembly . Brett