title: The different effects of structurally related sulfakinins on Drosophila melanogaster odor preference and locomotion suggest involvement of distinct mechanisms.
abstract: Sulfakinins are myoactive peptides and antifeedant factors. Naturally occurring drosulfakinin I (DSK I; FDDYGHMRFNH(2)) and drosulfakinin II (DSK II; GGDDQFDDYGHMRFNH(2)) contain sulfated or nonsulfated tyrosine. We discovered sDSK II and nsDSK II influenced Drosophila melanogaster larval odor preference. However, sDSK I, nsDSK I, MRFNH(2), and saline did not influence odor preference. We discovered sDSK I and nsDSK I influenced larval locomotion. However, sDSK II, nsDSK II, MRFNH(2), and saline did not influence locomotion. Our novel data suggest distinct mechanisms underlie the effects of DSK I and DSK II peptides on odor preference and locomotion, parameters important to many facets of animal survival.
authors.affiliation: Biological Chemistry Department, University of Michigan Medical School, Ann Arbor, MI 48109-0606, USA. nicholsr@umich.edu
authors.forename: Ruthann
authors.initials: R
authors.lastname: Nichols
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Egle
authors.forename: Nicholas R
authors.initials: NR
authors.lastname: Langan
authors.forename: Gregory C
authors.initials: GC
authors.lastname: Palmer
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D029721:Drosophila Proteins / Q000737:chemistry / Q000494:pharmacology*; D004331:Drosophila melanogaster / Q000187:drug effects / Q000502:physiology*; D036341:Intercellular Signaling Peptides and Proteins; D007814:Larva / Q000187:drug effects / Q000502:physiology; D008124:Locomotion / Q000187:drug effects / Q000502:physiology; D008969:Molecular Sequence Data; D009479:Neuropeptides / Q000737:chemistry / Q000494:pharmacology*; D009812:Odorants; D009842:Oligopeptides / Q000737:chemistry / Q000494:pharmacology*; D010455:Peptides / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D029721:Drosophila Proteins; D036341:Intercellular Signaling Peptides and Proteins; D009479:Neuropeptides; D009842:Oligopeptides; D010455:Peptides; C056936:drosulfakinin 1; C056938:drosulfakinin II
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