Distinct mechanisms produce functionally complementary actions of neuropeptides that are structurally related but derived from different precursors.

ABSTRACT: Many bioactive neuropeptides containing RFamide at their C terminus have been described in both invertebrates and vertebrates. To obtain insight into the functional logic of RFamide signaling, we investigate it here in the feeding system of Aplysia. We focus on the expression, localization, and actions of two families of RFamide peptides, the FRFamides and FMRFamide, in the central neuronal circuitry and the peripheral musculature that generate the feeding movements. We describe the cloning of the FRFamide precursor protein and show that the FRFamides and FMRFamide are derived from different precursors. We map the expression of the FRFamide and FMRFamide precursors in the feeding circuitry using in situ hybridization and immunostaining and confirm proteolytic processing of the FRFamide pre

SUBMITTER: Vilim FS 

PROVIDER: S-EPMC2826173 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature