Cloning and characterization of an ecdysone receptor cDNA from Locusta migratoria
| Autor: | Virginia K. Walker, David S Saleh, Jianzhong Zhang, G.R. Wyatt |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Ecdysone
Receptors Steroid animal structures DNA Complementary Molecular Sequence Data Grasshoppers Biochemistry chemistry.chemical_compound Endocrinology Complementary DNA Animals Amino Acid Sequence Cloning Molecular Molecular Biology Ecdysteroid biology Base Sequence fungi Migratory locust biology.organism_classification Molecular biology Nuclear receptor chemistry Juvenile hormone Ecdysone receptor Sequence Alignment Sequence Analysis hormones hormone substitutes and hormone antagonists Locust |
| Zdroj: | Molecular and cellular endocrinology. 143(1-2) |
| ISSN: | 0303-7207 |
| Popis: | To facilitate studies on the hormonal control of development in the migratory locust, Locusta migratoria, we have undertaken the cloning of cDNAs for nuclear hormone receptors. Sequences obtained by polymerase chain reaction (PCR) showed homology with receptor family members including the ecdysteroid receptor (EcR). A cDNA clone corresponding to the EcR fragment includes an open reading frame of 1622 nucleotides, predicting a 59 kDa protein showing clear homology with EcRs and distinct from other classes of nuclear receptors. Northern analysis revealed a major transcript of 9.2 kb. In fifth instar fat body, the transcript was most abundant at the end of the instar when ecdysone titres are highest. There was no obvious evidence of EcR regulation by a juvenile hormone analog. Although its role in development may be similar, the locust ecdysone receptor (LmEcR) is divergent from EcRs characterized from insects belonging to the dipteran and lepidopteran orders, presumably reflecting the more ancestral sequence in the relatively primitive locust. |
| Databáze: | OpenAIRE |
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