Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Amphiphysin is necessary for organization of the excitation-contraction coupling machinery of muscles, but not for synaptic vesicle endocytosis in Drosophila
AU - Razzaq, Azam
AU - Robinson, Iain M.
AU - McMahon, Harvey T.
AU - Skepper, Jeremy N.
AU - Su, Ya
AU - Zelhof, Andrew C.
AU - Jackson, Antony P.
AU - Gay, Nicholas J.
AU - O'Kane, Cahir J.
PY - 2001/11/15
Y1 - 2001/11/15
N2 - Amphiphysins 1 and 2 are enriched in the mammalian brain and are proposed to recruit dynamin to sites of endocytosis. Shorter amphiphysin 2 splice variants are also found ubiquitously, with an enrichment in skeletal muscle. At the Drosophila larval neuromuscular junction, amphiphysin is localized postsynaptically and amphiphysin mutants have no major defects in neurotransmission; they are also viable, but flightless. Like mammalian amphiphysin 2 in muscles, Drosophila amphiphysin does not bind clathrin, but can tubulate lipids and is localized on T-tubules. Amphiphysin mutants have a novel phenotype, a severely disorganized T-tubule/sarcoplasmic reticulum system. We therefore propose that muscle amphiphysin is not involved in clathrin-mediated endocytosis, but in the structural organization of the membrane-bound compartments of the excitation-contraction coupling machinery of muscles.
AB - Amphiphysins 1 and 2 are enriched in the mammalian brain and are proposed to recruit dynamin to sites of endocytosis. Shorter amphiphysin 2 splice variants are also found ubiquitously, with an enrichment in skeletal muscle. At the Drosophila larval neuromuscular junction, amphiphysin is localized postsynaptically and amphiphysin mutants have no major defects in neurotransmission; they are also viable, but flightless. Like mammalian amphiphysin 2 in muscles, Drosophila amphiphysin does not bind clathrin, but can tubulate lipids and is localized on T-tubules. Amphiphysin mutants have a novel phenotype, a severely disorganized T-tubule/sarcoplasmic reticulum system. We therefore propose that muscle amphiphysin is not involved in clathrin-mediated endocytosis, but in the structural organization of the membrane-bound compartments of the excitation-contraction coupling machinery of muscles.
KW - DLG
KW - Dynamin
KW - Indirect flight muscles
KW - Myopathy
KW - Ryanodine receptor
KW - T-tubules
U2 - 10.1101/gad.207801
DO - 10.1101/gad.207801
M3 - Journal article
C2 - 11711432
AN - SCOPUS:0035890136
VL - 15
SP - 2967
EP - 2979
JO - Genes and Development
JF - Genes and Development
SN - 0890-9369
IS - 22
ER -