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@ARTICLE{Blenau:906146,
author = {Blenau, Wolfgang and Bremer, Anna-Sophie and Schwietz,
Yannik and Friedrich, Daniel and Ragionieri, Lapo and
Predel, Reinhard and Balfanz, Sabine and Baumann, Arnd},
title = {{P}a{O}ctβ2{R}: {I}dentification and {F}unctional
{C}haracterization of an {O}ctopamine {R}eceptor
{A}ctivating {A}denylyl {C}yclase {A}ctivity in the
{A}merican {C}ockroach {P}eriplaneta americana},
journal = {International journal of molecular sciences},
volume = {23},
number = {3},
issn = {1422-0067},
address = {Basel},
publisher = {Molecular Diversity Preservation International},
reportid = {FZJ-2022-01259},
pages = {1677 -},
year = {2022},
abstract = {Biogenic amines constitute an important group of
neuroactive substances that control and modulate various
neural circuits. These small organic compounds engage
members of the guanine nucleotide-binding protein coupled
receptor (GPCR) superfamily to evoke specific cellular
responses. In addition to dopamine- and 5-hydroxytryptamine
(serotonin) receptors, arthropods express receptors that are
activated exclusively by tyramine and octopamine. These
phenolamines functionally substitute the noradrenergic
system of vertebrates Octopamine receptors that are the
focus of this study are classified as either α- or
β-adrenergic-like. Knowledge on these receptors is scarce
for the American cockroach (Periplaneta americana). So far,
only an α–adrenergic-like octopamine receptor that
primarily causes Ca2+ release from intracellular stores has
been studied from the cockroach (PaOctα1R). Here we
succeeded in cloning a gene from cockroach brain tissue that
encodes a β-adrenergic-like receptor and leads to cAMP
production upon activation. Notably, the receptor is
100-fold more selective for octopamine than for tyramine. A
series of synthetic antagonists selectively block receptor
activity with epinastine being the most potent.
Bioinformatics allowed us to identify a total of 19 receptor
sequences that build the framework of the biogenic amine
receptor clade in the American cockroach. Phylogenetic
analyses using these sequences and receptor sequences from
model organisms showed that the newly cloned gene is an
β2-adrenergic-like octopamine receptor. The functional
characterization of PaOctβ2R and the bioinformatics data
uncovered that the monoaminergic receptor family in the
hemimetabolic P. americana is similarly complex as in
holometabolic model insects like Drosophila melanogaster and
the honeybee, Apis mellifera. Thus, investigating these
receptors in detail may contribute to a better understanding
of monoaminergic signaling in insect behavior and
physiology.},
cin = {IBI-1},
ddc = {540},
cid = {I:(DE-Juel1)IBI-1-20200312},
pnm = {5243 - Information Processing in Distributed Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5243},
typ = {PUB:(DE-HGF)16},
pubmed = {35163598},
UT = {WOS:000755707900001},
doi = {10.3390/ijms23031677},
url = {https://juser.fz-juelich.de/record/906146},
}