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The cytomatrix at the active zone (CAZ) has been implicated in defining the site of Ca2+-dependent exocytosis of neurotransmitter. We have identified here a novel CAZ protein of approximately 120 kD from rat brain and named it CAST (CAZ-associated structural protein). CAST had no transmembrane segment, but had four coiled-coil domains and a putative(More)
We have recently isolated a novel cytomatrix at the active zone (CAZ)-associated protein, CAST, and found it directly binds another CAZ protein RIM1 and indirectly binds Munc13-1 through RIM1; RIM1 and Munc13-1 directly bind to each other and are implicated in priming of synaptic vesicles. Here, we show that all the CAZ proteins thus far known form a large(More)
A serine/threonine kinase SAD-1 in C. elegans regulates synapse development. We report here the isolation and characterization of mammalian orthologs of SAD-1, named SAD-A and SAD-B, which are specifically expressed in the brain. SAD-B is associated with synaptic vesicles and, like the active zone proteins CAST and Bassoon, is tightly associated with the(More)
The active zone protein CAST binds directly to the other active zone proteins RIM, Bassoon and Piccolo, and it has been suggested that these protein–protein interactions play an important role in neurotransmitter release. To further elucidate the molecular mechanism, we attempted to examine the function of CAST using PC12 cells as a model system. Although(More)
CAST is a novel cytomatrix at the active zone (CAZ)-associated protein. In conventional brain synapses, CAST forms a large molecular complex with other CAZ proteins, including RIM, Munc13-1, Bassoon, and Piccolo. Here we investigated the distribution of CAST and its structurally related protein, ELKS, in mouse retina. Immunofluorescence analyses revealed(More)
The cytomatrix at the active zone (CAZ) is thought to define the site of Ca2+-dependent exocytosis of neurotransmitters. We have recently identified a novel CAZ protein from rat brain which we have named CAST (CAZ-associated structural protein). CAST forms a large molecular complex with other CAZ proteins such as Bassoon, RIM1 and Munc13-1, at least through(More)
The active zone protein CAST binds directly to the other active zone proteins RIM, Bassoon and Piccolo, and it has been suggested that these protein-protein interactions play an important role in neurotransmitter release. To further elucidate the molecular mechanism, we attempted to examine the function of CAST using PC12 cells as a model system. Although(More)
bichromophores composed of polyaminopolycarboxylate interlink: pH response of excimer emission. and conformation in water-soluble bis(pyrenyl amide) receptors derived from Senile plaque composition and posttranslational modification of amyloid-β peptide and associated proteins. Neuroinflammation is a key player in Parkinson's disease and a prime target for(More)
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