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XB-ART-7992
Neuron 2001 Dec 06;325:867-81. doi: 10.1016/s0896-6273(01)00522-0.
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SLO-1 potassium channels control quantal content of neurotransmitter release at the C. elegans neuromuscular junction.

Wang ZW , Saifee O , Nonet ML , Salkoff L .


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Six mutants of SLO-1, a large-conductance, Ca(2+)-activated K(+) channel of C. elegans, were obtained in a genetic screen for regulators of neurotransmitter release. Mutants were isolated by their ability to suppress lethargy of an unc-64 syntaxin mutant that restricts neurotransmitter release. We measured evoked postsynaptic currents at the neuromuscular junction in both wild-type and mutants and observed that the removal of SLO-1 greatly increased quantal content primarily by increasing duration of release. The selective isolation of slo-1 as the only ion channel mutant derived from a whole genomic screen to detect regulators of neurotransmitter release suggests that SLO-1 plays an important, if not unique, role in regulating neurotransmitter release.

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Species referenced: Xenopus
Genes referenced: kcnma1