The myomodulin-related neuropeptides: Characterization of a gene encoding a family of peptide cotransmitters in Aplysia

M. W. Miller, S. Beushausen, A. Vitek, S. Stamm, I. Kupfermann, J. Brosius, K. R. Weiss

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

The myomodulin-related peptides comprise a family of cotransmitters that modulate neuromuscular signaling in the feeding system of Aplysia. In this study, cDNA clones encoding a myomodulin precursor polypeptide were isolated and characterized. This precursor contains seven different myomodulin-related peptides, one of which, myomodulin A, is present in 10 contiguous copies. The sequence of a myomodulin genomic clone indicates that all of these myomodulin-related peptides are encoded on a single exon. The myomodulin gene is expressed in a tissue-specific manner and myomodulin mRNA is localized to specific neurons in the Aplysia CNS. The presence of multiple related neuropeptides can greatly increase the range and precision of signaling at synapses where they act as modulator cotransmitters.

Original languageEnglish
Pages (from-to)3358-3367
Number of pages10
JournalJournal of Neuroscience
Volume13
Issue number8
StatePublished - 1993

Funding

FundersFunder number
National Institute of Mental HealthR37MH036730

    Keywords

    • Aplysia californica
    • Cotransmitter
    • Invertebrate
    • Mollusk
    • Myomodulin
    • Neuromodulator
    • Neuropeptide
    • Peptide family
    • Polypeptide
    • Precursor

    ASJC Scopus subject areas

    • General Neuroscience

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