A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Reference Report

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Citation Rikhy, R., Ramaswami, M., Krishnan, K.S. (2003). A temperature-sensitive allele of Drosophila sesB reveals acute functions for the mitochondrial adenine nucleotide translocase in synaptic transmission and dynamin regulation.  Genetics 165(3): 1243--1253. (Export to RIS)
FlyBase ID FBrf0167630
Publication Type Research paper
PubMed ID 14668379
PubMed Abstract Rapidly reversible, temperature-sensitive (ts) paralytic mutants of Drosophila have been useful in delineating immediate in vivo functions of molecules involved in synaptic transmission. Here we report isolation and characterization of orangi (org), an enhancer of shibire (shi), a ts paralytic mutant in Drosophila dynamin. org is an allele of the stress sensitive B (sesB) locus that encodes a mitochondrial adenine nucleotide translocase (ANT) and results in a unique ts paralytic behavior that is accompanied by a complete loss of synaptic transmission in the visual system. sesB(org) reduces the restrictive temperature for all shi(ts) alleles tested except for shi(ts1). This characteristic allele-specific interaction of sesB(org) with shi is shared by abnormal wing discs (awd), a gene encoding nucleoside diphosphate kinase (NDK). sesB(org) shows independent synergistic interactions, an observation that is consistent with a shared pathway by which org and awd influence shi function. Genetic and electrophysiological analyses presented here, together with the observation that the sesB(org) mutation reduces biochemically assayed ANT activity, suggest a model in which a continuous mitochondrial ANT-dependent supply of ATP is required to sustain NDK-dependent activation of presynaptic dynamin during a normal range of synaptic activity.
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Language of Publication English
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Publication Type Journal
Abbreviation Genetics
Title Genetics
Publication Year 1916-
ISBN/ISSN 0016-6731
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