منابع مشابه
Structure-function analysis of the cysteine string protein in Drosophila: cysteine string, linker and C terminus.
Cysteine string proteins (CSPs) are conserved secretory vesicle proteins involved in regulating neurotransmitter and peptide release. While the function of the J-domain has been studied in detail, little is known about other conserved regions. We have constructed mutant genes coding for proteins with modified cysteine string, linker region or C terminus and transformed them into Csp null-mutant...
متن کاملThe cysteine-string domain of the secretory vesicle cysteine-string protein is required for membrane targeting.
The post-translational addition of palmitic acid residues to cysteine-string protein (Csp) was originally thought to form the basis for membrane association of this secretory-vesicle protein. However, subsequent work showed that chemical depalmitoylation of Csp does not result in its release from membranes. We have confirmed these findings and employed [3H]palmitate labelling of PC12 cells to d...
متن کاملPhosphorylation of Cysteine String Protein Triggers a Major Conformational Switch
Cysteine string protein (CSP) is a member of the DnaJ/Hsp40 chaperone family that localizes to neuronal synaptic vesicles. Impaired CSP function leads to neurodegeneration in humans and model organisms as a result of misfolding of client proteins involved in neurotransmission. Mammalian CSP is phosphorylated in vivo on Ser10, and this modulates its protein interactions and effects on neurotrans...
متن کاملCysteine string protein functions directly in regulated exocytosis.
Cysteine string protein (Csp) is essential for neurotransmitter release in Drosophila. It has been suggested that Csp functions by regulating the activity of presynaptic Ca2+ channels, thus controlling exocytosis. We have examined the effect of overexpressing Csp1 in PC12 cells, a neuroendocrine cell line. PC12 cell clones overexpressing Csp1 did not show any changes in morphology, granule numb...
متن کاملMutational analysis of cysteine-string protein function in insulin exocytosis.
Cysteine-string proteins (Csps) are vesicle proteins involved in neurotransmission. They contain at least four domains: an N-terminal J-domain which can interact with the chaperone Hsc70, an adjacent linker region, the defining cysteine rich domain and a variable C terminus. As the relevance of these domains for the function of Csps in exocytosis is unknown, we have performed a mutational analy...
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ژورنال
عنوان ژورنال: Journal of Neurochemistry
سال: 2008
ISSN: 0022-3042
DOI: 10.1046/j.1471-4159.2000.0741781.x