TY  - GEN
A1  - Blenau, Wolfgang
A1  - Mustard, Julie A.
A1  - Hamilton, Ingrid S.
A1  - Ward, Vernon K.
A1  - Ebert, Paul R.
A1  - Mercer, Alison R.
T1  - Analysis of two D1-like dopamine receptors from the honey bee Apis mellifera reveals agonist-independent activity
N2  - Dopamine is found in many invertebrate organisms, including insects, however, the mechanisms through which this amine operates remain unclear. We have expressed two dopamine receptors cloned from honey bee (AmDOP1 and AmDOP2) in insect cells (Spodoptera frugiperda), and compared their pharmacology directly using production of cAMP as a functional assay. In each assay, AmDOP1 receptors required lower concentrations of dopamine and 6,7-ADTN for maximal activation than AmDOP2 receptors. Conversely, butaclamol and cis(Z)-flupentixol were more potent at blocking the cAMP response mediated through AmDOP2 than AmDOP1 receptors. Expression of AmDOP1, but not AmDOP2, receptors significantly increased levels of cAMP even in the absence of ligand. This constitutive activity was blocked by cis(Z)-flupentixol. This work provides the first evidence of a constitutively activated dopamine receptor in invertebrates and suggests that although AmDOP1 and AmDOP2 share much less homology than their vertebrate counterparts, they display a number of functional parallels with the mammalian D1-like dopamine receptors.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - paper 109 
KW  - G protein-coupled receptor
KW  - Biogenic amine
KW  - Invertebrate
KW  - cAMP
KW  - Baculovirus
Y1  - 2003
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-44378
ER  - 
TY  - GEN
A1  - Blenau, Wolfgang
A1  - Grohmann, Lore
A1  - Erber, Joachim
A1  - Ebert, Paul R.
A1  - Strünker, Timo
A1  - Baumann, Arnd
T1  - Molecular and functional characterization of an octopamine receptor from honeybee (Apis mellifera) brain
N2  - Biogenic amines and their receptors regulate and modulate many physiological and behavioural processes in animals. In vertebrates, octopamine is only found in trace amounts and its function as a true neurotransmitter is unclear. In protostomes, however, octopamine can act as neurotransmitter, neuromodulator and neurohormone. In the honeybee, octopamine acts as a neuromodulator and is involved in learning and memory formation. The identification of potential octopamine receptors is decisive for an understanding of the cellular pathways involved in mediating the effects of octopamine. Here we report the cloning and functional characterization of the first octopamine receptor from the honeybee, Apis mellifera . The gene was isolated from a brain-specific cDNA library. It encodes a protein most closely related to octopamine receptors from Drosophila melanogaster and Lymnea stagnalis . Signalling properties of the cloned receptor were studied in transiently transfected human embryonic kidney (HEK) 293 cells. Nanomolar to micromolar concentrations of octopamine induced oscillatory increases in the intracellular Ca2+ concentration. In contrast to octopamine, tyramine only elicited Ca2+ responses at micromolar concentrations. The gene is abundantly expressed in many somata of the honeybee brain, suggesting that this octopamine receptor is involved in the processing of sensory inputs, antennal motor outputs and higher-order brain functions.
KW  - Biogenic amine
KW  - Ca2+
KW  - cyclic AMP
KW  - G protein-coupled receptor
KW  - insect
Y1  - 2003
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-44293
ER  - 
TY  - JOUR
A1  - Chipman, Ariel D.
A1  - Ferrier, David E. K.
A1  - Brena, Carlo
A1  - Qu, Jiaxin
A1  - Hughes, Daniel S. T.
A1  - Schroeder, Reinhard
A1  - Torres-Oliva, Montserrat
A1  - Znassi, Nadia
A1  - Jiang, Huaiyang
A1  - Almeida, Francisca C.
A1  - Alonso, Claudio R.
A1  - Apostolou, Zivkos
A1  - Aqrawi, Peshtewani
A1  - Arthur, Wallace
A1  - Barna, Jennifer C. J.
A1  - Blankenburg, Kerstin P.
A1  - Brites, Daniela
A1  - Capella-Gutierrez, Salvador
A1  - Coyle, Marcus
A1  - Dearden, Peter K.
A1  - Du Pasquier, Louis
A1  - Duncan, Elizabeth J.
A1  - Ebert, Dieter
A1  - Eibner, Cornelius
A1  - Erikson, Galina
A1  - Evans, Peter D.
A1  - Extavour, Cassandra G.
A1  - Francisco, Liezl
A1  - Gabaldon, Toni
A1  - Gillis, William J.
A1  - Goodwin-Horn, Elizabeth A.
A1  - Green, Jack E.
A1  - Griffiths-Jones, Sam
A1  - Grimmelikhuijzen, Cornelis J. P.
A1  - Gubbala, Sai
A1  - Guigo, Roderic
A1  - Han, Yi
A1  - Hauser, Frank
A1  - Havlak, Paul
A1  - Hayden, Luke
A1  - Helbing, Sophie
A1  - Holder, Michael
A1  - Hui, Jerome H. L.
A1  - Hunn, Julia P.
A1  - Hunnekuhl, Vera S.
A1  - Jackson, LaRonda
A1  - Javaid, Mehwish
A1  - Jhangiani, Shalini N.
A1  - Jiggins, Francis M.
A1  - Jones, Tamsin E.
A1  - Kaiser, Tobias S.
A1  - Kalra, Divya
A1  - Kenny, Nathan J.
A1  - Korchina, Viktoriya
A1  - Kovar, Christie L.
A1  - Kraus, F. Bernhard
A1  - Lapraz, Francois
A1  - Lee, Sandra L.
A1  - Lv, Jie
A1  - Mandapat, Christigale
A1  - Manning, Gerard
A1  - Mariotti, Marco
A1  - Mata, Robert
A1  - Mathew, Tittu
A1  - Neumann, Tobias
A1  - Newsham, Irene
A1  - Ngo, Dinh N.
A1  - Ninova, Maria
A1  - Okwuonu, Geoffrey
A1  - Ongeri, Fiona
A1  - Palmer, William J.
A1  - Patil, Shobha
A1  - Patraquim, Pedro
A1  - Pham, Christopher
A1  - Pu, Ling-Ling
A1  - Putman, Nicholas H.
A1  - Rabouille, Catherine
A1  - Ramos, Olivia Mendivil
A1  - Rhodes, Adelaide C.
A1  - Robertson, Helen E.
A1  - Robertson, Hugh M.
A1  - Ronshaugen, Matthew
A1  - Rozas, Julio
A1  - Saada, Nehad
A1  - Sanchez-Gracia, Alejandro
A1  - Scherer, Steven E.
A1  - Schurko, Andrew M.
A1  - Siggens, Kenneth W.
A1  - Simmons, DeNard
A1  - Stief, Anna
A1  - Stolle, Eckart
A1  - Telford, Maximilian J.
A1  - Tessmar-Raible, Kristin
A1  - Thornton, Rebecca
A1  - van der Zee, Maurijn
A1  - von Haeseler, Arndt
A1  - Williams, James M.
A1  - Willis, Judith H.
A1  - Wu, Yuanqing
A1  - Zou, Xiaoyan
A1  - Lawson, Daniel
A1  - Muzny, Donna M.
A1  - Worley, Kim C.
A1  - Gibbs, Richard A.
A1  - Akam, Michael
A1  - Richards, Stephen
T1  - The first myriapod genome sequence reveals conservative arthropod gene content and genome organisation in the centipede Strigamia maritima
JF  - PLoS biology
N2  - Myriapods (e. g., centipedes and millipedes) display a simple homonomous body plan relative to other arthropods. All members of the class are terrestrial, but they attained terrestriality independently of insects. Myriapoda is the only arthropod class not represented by a sequenced genome. We present an analysis of the genome of the centipede Strigamia maritima. It retains a compact genome that has undergone less gene loss and shuffling than previously sequenced arthropods, and many orthologues of genes conserved from the bilaterian ancestor that have been lost in insects. Our analysis locates many genes in conserved macro-synteny contexts, and many small-scale examples of gene clustering. We describe several examples where S. maritima shows different solutions from insects to similar problems. The insect olfactory receptor gene family is absent from S. maritima, and olfaction in air is likely effected by expansion of other receptor gene families. For some genes S. maritima has evolved paralogues to generate coding sequence diversity, where insects use alternate splicing. This is most striking for the Dscam gene, which in Drosophila generates more than 100,000 alternate splice forms, but in S. maritima is encoded by over 100 paralogues. We see an intriguing linkage between the absence of any known photosensory proteins in a blind organism and the additional absence of canonical circadian clock genes. The phylogenetic position of myriapods allows us to identify where in arthropod phylogeny several particular molecular mechanisms and traits emerged. For example, we conclude that juvenile hormone signalling evolved with the emergence of the exoskeleton in the arthropods and that RR-1 containing cuticle proteins evolved in the lineage leading to Mandibulata. We also identify when various gene expansions and losses occurred. The genome of S. maritima offers us a unique glimpse into the ancestral arthropod genome, while also displaying many adaptations to its specific life history.
Y1  - 2014
U6  - https://doi.org/10.1371/journal.pbio.1002005
SN  - 1545-7885
VL  - 12
IS  - 11
PB  - PLoS
CY  - San Fransisco
ER  -