Partial purification of a receptor for the adipokinetic hormones from Musca autumnalis face flies.
Partial purification of the receptors for the neurohormones, diptera corpora cardiaca factors 1 and 2 (DCC1 and DCC2) was achieved. Receptor proteins were obtained from the abdomens of face fly, Musca autumnalis De Geer. Purification methods included detergent solubilization, affinity chromatography, and polyacrylamide gel electrophoresis. Analysis by gel electrophoresis has identified two proteins from this partial purification with relative molecular weights of 45 and 90 kD. A crude receptor preparation was used to develop a ligand binding assay with radiolabeled (tritiated and iodinated) DCC1. Ligand binding was inhibited by 90% when excess unlabeled DCC1 was added to the assay mixture. Ligand binding was optimum at pH 7.5. Binding saturation occurred at approximately 12 picomole radiolabeled ligand concentration. Because DCC1 and DCC2 have been shown to effect the lipid and trehalose levels in the insect an understanding of the neuropeptide-receptor interaction is important for the development of new methods of control of dairy and poultry muscoid flies.
Minnifield
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NM
Livestock Insects Laboratory, United States Department of Agriculture, Beltsville, MD 20705.
Hayes
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DK
D000818:Animals; D004591:Electrophoresis, Polyacrylamide Gel; D007301:Insect Hormones / Q000378:metabolism*; D009117:Muscidae; D018377:Neurotransmitter Agents / Q000378:metabolism*; D011869:Radioligand Assay; D011956:Receptors, Cell Surface / Q000302:isolation & purification*; D018010:Receptors, Invertebrate Peptide
D007301:Insect Hormones; D018377:Neurotransmitter Agents; D011956:Receptors, Cell Surface; D018010:Receptors, Invertebrate Peptide; C079628:diptera corpora cardiaca factor 1 receptor; C081575:diptera corpora cardiaca factor 2 receptor