Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Arnold, C; Reisch, N; Leibold, C; Becker, S; Prüfert, K; Sautter, K; Palm, D; Jatzke, S; Buchner, S; Buchner, E.
Structure-function analysis of the cysteine string protein in Drosophila: cysteine string, linker and C terminus.
J Exp Biol. 2004; 207(Pt 8): 1323-1334.
Doi: 10.1242/jeb.00898
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- Schild Kristina
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- Abstract:
- 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 Drosophila: In the living animal, mutated CSP lacking all cysteines fails to associate with membranes, does not concentrate in synaptic terminals, and cannot rescue adult temperature-sensitive paralysis and short life span, both prominent null mutant phenotypes. A mutant protein with 5 instead of 11 string cysteines appears to be normally targeted but cannot rescue paralysis at 37 degrees C. We propose that the cysteine string, in addition to its role in targeting, may be essential for a function of CSP that is dependent on the number of cysteines in the string. A deletion in the linker region or the C terminus does not affect CSP targeting, and function in adults is only marginally impaired.
- Find related publications in this database (using NLM MeSH Indexing)
- Amino Acid Sequence -
- Animals -
- Cell Membrane - metabolism
- Cysteine - genetics Cysteine - metabolism
- DNA Primers -
- DNA, Complementary - genetics
- Drosophila - genetics
- Drosophila Proteins - genetics Drosophila Proteins - metabolism
- Electrophoresis, Polyacrylamide Gel -
- Electrophysiology -
- Epitope Mapping -
- Gene Components -
- Immunoblotting -
- Immunohistochemistry -
- Molecular Sequence Data -
- Mutagenesis, Site-Directed -
- Mutation - genetics
- Phenotype -
- Plasmids - genetics
- Sequence Alignment -
- Structure-Activity Relationship -
- Temperature -
- Transformation, Genetic -
- Find related publications in this database (Keywords)
- cysteine string protein (CSP)
- secretory vesicle
- Drosophila
- in vitro mutagenesis
- protein targeting
- paralysis
- life span