6533b7defe1ef96bd1276708

RESEARCH PRODUCT

Analysis of involvement of the 3?-untranslated regions in regulating mRNA stability for vitellogenin, cyanoprotein ?, and cyanoprotein ? from the bean bug,Riptortus clavatus

Hubert WojtasekKen MiuraTetsuro ShinodaYasuo Chinzei

subject

Untranslated regionPhysiologyMolecular Sequence DatahexamerinElectrophoretic Mobility Shift AssayRNA-binding proteinBinding CompetitiveBiochemistryHemipteraVitellogeninsVitellogeninBotanyAnimalsRNA Messenger3' Untranslated RegionsRegulation of gene expressionMessenger RNABase Sequencebiologyjuvenile hormoneThree prime untranslated regionRNA-Binding ProteinsRNAGeneral MedicineRNA binding proteincyanoproteindiapauseGene Expression RegulationBiochemistryInsect ScienceJuvenile hormonebiology.proteinInsect ProteinsSequence Alignment

description

The degradation of the 3'-untranslated regions (UTRs) of vitellogenin, cyanoprotein alpha, and cyanoprotein beta from the bean bug, Riptortus clavatus, was analyzed in vitro. The degradation pattern was similar for all three RNAs, with a high degradation rate in non-diapausing adult insects and no degradation in the fifth instar nymphs and in diapausing adults, and was not correlated with the expression levels of these three proteins. Proteins binding to the 3'-UTRs were detected in polysomal and cytosolic extracts. These factors, however, were present in all developmental stages. The abundance of the polysomal factor showed little variation, but the cytosolic factor was enriched in adult insects. Cross-competition experiments demonstrated that the same factors bound to all three RNAs with similar affinity. The pattern of degradation, presence of the binding factors in all stages, and their inability to distinguish between the target sequences indicate that the 3'-UTRs do not participate in controlling the expression of these three proteins.

yearjournalcountryeditionlanguage
2002-08-09Archives of Insect Biochemistry and Physiology
https://doi.org/10.1002/arch.10047