The intracellular adaptor protein SH3P7 is the mammalian ortholog of yeast actin-binding protein 1 and thus alternatively named as mAbp1 (or HIP55). Structural properties, biochemical analysis of its interaction partners and siRNA studies implicated mAbp1 as an accessory protein in clathrin-mediated endocytosis (CME). Here, we describe the generation and characterization of mice deficient for SH3P7/mAbp1 owing to targeted gene disruption in embryonic stem cells. Mutant animals are viable and fertile without obvious deficits during the first weeks of life. Abnormal structure and function of organs including the spleen, heart, and lung is observed at about 3 months of age in both heterozygous and homozygous mouse mutants. A moderate reduction of both receptor-mediated and synaptic endocytosis is observed in embryonic fibroblasts and in synapses of hippocampal neurons, respectively. Recycling of synaptic vesicles in hippocampal boutons is severely impaired and delayed four-fold. The presynaptic defect of SH3P7/mAbp1 mouse mutants is associated with their constricted physical capabilities and disturbed neuromotoric behaviour. Our data reveal a nonredundant role of SH3P7/mAbp1 in CME and places its function downstream of vesicle fission.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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| Evidence ID | Analyze ID | File | Description |
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