The cloning of one putative octopamine receptor and two putative serotonin receptors from the tobacco hawkmoth, Manduca sexta

Serotonin and octopamine (OA) are biogenic amines that are active throughout the nervous systems of insects, affecting sensory processing, information coding and behavior. As an initial step towards understanding the modulatory roles of these amines in olfactory processing we cloned two putative ser...

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Bibliographic Details
Published in:Insect biochemistry and molecular biology 2006-09, Vol.36 (9), p.741-747
Main Authors: Dacks, Andrew M., Dacks, Joel B., Christensen, Thomas A., Nighorn, Alan J.
Format: Article
Language:English
Subjects:
Amino Acid Sequence
Animals
Bombyx mori
Cloning, Molecular
Heliothis virescens
Lepidoptera
Manduca
Manduca - genetics
Manduca sexta
Modulation
Molecular Sequence Data
Octopamine
Octopamine - metabolism
Receptor, Serotonin, 5-HT1A - genetics
Receptor, Serotonin, 5-HT1B - genetics
Receptors
Receptors, Biogenic Amine - genetics
Sequence Homology, Amino Acid
Serotonin
Serotonin - metabolism
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Summary:Serotonin and octopamine (OA) are biogenic amines that are active throughout the nervous systems of insects, affecting sensory processing, information coding and behavior. As an initial step towards understanding the modulatory roles of these amines in olfactory processing we cloned two putative serotonin receptors (Ms5HT1A and Ms5HT1B) and one putative OA (MsOAR) receptor from the moth Manduca sexta. Ms5HT1A and Ms5HT1B were both similar to 5HT1-type receptors but differed from each other in their N-terminus and 3rd cytoplasmic loop. Ms5HT1A was nearly identical to a serotonin receptor from Heliothis virescens and Ms5HT1B was almost identical to a serotonin receptor from Bombyx mori. The sequences for homologs of Ms5HT1A from B. mori and Ms5HT1B from H. virescens were also obtained, suggesting that the Lepidoptera likely have at least two serotonin receptors. The MsOAR shares significant sequence homology with pharmacologically characterized OA receptors, but less similarity to putative OA/tyramine receptors from the moths B. mori and H. virescens. Using the MsOAR sequence, fragments encoding putative OA receptors were obtained from B. mori and H. virescens, suggesting that MsOAR is the first OA receptor cloned from a lepidopteran.
ISSN:0965-1748
1879-0240
DOI:10.1016/j.ibmb.2006.07.002