Tribolium castaneum strain:TcA
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ABSTRACT:
PROVIDER: PRJNA392465 | ENA |
REPOSITORIES: ENA
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Project description:Juvenile hormone (JH) serves vital roles in insect reproduction, development, and many aspects of physiology. JH primarily acts at the gene-regulatory level through an intracellular receptor. The JH receptor (JHR) is a ligand-activated complex of transcription factors of the bHLH-PAS family, consisting of the JH-binding protein Methoprene-tolerant (MET) and its partner Taiman (TAI). Initial studies have indicated significance of post-transcriptional modification (phosphorylation), subunit assembly, and nucleocytoplasmic transport of JHR in JH signaling. However, our knowledge of JHR regulation at the protein level remains rudimentary, partly due to the difficulty of obtaining functional JHR proteins in a purified form. Here we present successful fermentation-level purification of JHR complexes of MET and TAI proteins from two insect species, the beetle Tribolium castaneum and the mosquito Aedes aegypti. The recombinant JHR subunits from each species were co-expressed using a baculovirus system in an insect cell line and purified through affinity steps, yielding soluble proteins, capable of binding both the hormonal ligand (JH III) and DNA bearing cognate JH-response elements. The present quantitative phosphoproteomcis analysis uncovered multiple phosphorylation sites in the TcMET protein, some of which were induced by methoprene. A functional bipartite nuclear localization signal, straddled by phosphorylated residues, was found within the disordered C-terminal region of TcMET. Our present characterization of the recombinant JHR is a primary step towards understanding JHR regulation.
2022-02-16 | PXD028599 | Pride
Project description:We report Illumina-generated RNASeq data of several populations of Tribolium castaneum larvae selected for higher or lower immune priming specificity as well as unselected control populations. From each of these populations, we injected groups of 20 larvae with either one of three bacteria species or left them untreated as controls. Whole body samples were taken 6h after injection and used for RNASeq Analysis.
2019-09-11 | GSE133892 | GEO
Project description:Neuropeptides and neurohormones are among the more diverse and functionally important classes of cell-to-cell signaling molecules involved in animal development and behavior. Less is known about the hormones and neuropeptides of the red flour beetle, Tribolium castaneum, than many other insects. However, the genomic information becoming available from this organism presents an opportunity to identify multiple neuropeptide and hormone genes, and hence their associated protein precursors. Using similarity-based prediction, we report new neuropeptides and hormone precursors from T. castaneum, bringing the number of annotated precursors to 37. We identified one prohormone (SVDPIDGDLIG-containing) having little similarity to other insect prohormones. The conversion of the protein precursors into bioactive peptides requires a suite of processing enzymes and a number of enzymatic steps; using the web-based NeuroPred application and similarity-based bioinformatics approaches, we predict 132 likely peptides that may result from the enzymatic processing of these gene products.
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