6533b7d3fe1ef96bd1260ae8
RESEARCH PRODUCT
Molecular cloning and expression of Tenebrio molitor ultraspiracle during metamorphosis and in vivo induction of its phosphorylation by 20-hydroxyecdysone.
Hervé BouhinMaryse Nicolaı̈Brigitte QuennedeyJean Delachambresubject
DNA ComplementaryMolecular Sequence Data20-HydroxyecdysoneGene ExpressionMolecular cloningBiologychemistry.chemical_compoundWestern blotGene expressionGeneticsmedicineAnimalsDrosophila ProteinsHumansProtein IsoformsAmino Acid SequenceRNA MessengerCloning MolecularPhosphorylationReceptorTenebrioMolecular BiologyEpidermis (botany)medicine.diagnostic_testMetamorphosis BiologicalDNA-binding domainSequence Analysis DNAMolecular biologyCell biologyDNA-Binding ProteinsEcdysteronechemistryInsect SciencePhosphorylationEpidermisTranscription Factorsdescription
Using a RT-PCR approach, the Tenebrio molitor homologue of Drosophila Ultraspiracle (TmUSP) was characterized. Its DNA binding domain shows a degree of identity with those of the other insect USPs. However, the ligand binding domain is closer to those of retinoid X receptors. Using an antibody raised against DmUSP, Western blot analysis of proteins from epidermis and other tissues revealed five immunoreactive bands, corresponding to different phosphorylated forms of a unique polypeptide, as shown by lambda-phosphatase treatment. The nuclear form of TmUSP seems unphosphorylated. An in vivo 20-hydroxyecdysone treatment increases considerably and rapidly the phosphorylated forms of TmUSP. This post-translational modification may play a role in the 20-hydroxyecdysone response.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-06-01 | Insect molecular biology |