Expression of a cDNA encoding a member of the hexamerin storage proteins from the moth Sesamia nonagrioides (Lef.) during diapause. 2007

Anastasios Spiliotopoulos, and Theodoros Gkouvitsas, and Argyro Fantinou, and Anna Kourti
Department of Agricultural Biotechnology, Agricultural University of Athens, Iera Odos 75, Athens 11855, Greece.

We isolated and sequenced a cDNA clone corresponding to a storage protein (SnoSP1) from the corn stalk borer Sesamia nonagrioides (Lef.). The cDNA for SnoSP1 (2403 bp) codes for a 751 residue protein with predicted molecular mass of 88.3 kDa and calculated isoelectric point pI=8.72. A signal peptide of 16 amino acids is present at the N-terminus and the protein contained conserved insect larval storage protein signature sequence patterns. Multiple alignment analysis of the amino acid sequence revealed that SnoSP1 is most similar to the basic juvenile hormone-suppressible protein 2 precursor (TniSP2) from Trichoplusia ni (71% identity) and other moderately methionine-rich hexamers. According to both phylogenetic analyses and the criteria of amino acid composition, SnoSP1 belongs to the subfamily of moderately methionine-rich storage proteins (3.7% methionine, 11% aromatic amino acid). Treatment with the juvenile hormone analog, methroprene, after head ligation of larvae, is found to suppress the level of SnoSP1 gene, indicating hormonal effects at the transcriptional level. We also examined developmental profiles of SnoSP1 expression in fat body from diapausing and non-diapausing larvae by semi-quantitative and Real-Time PCR assays. In non diapause conditions the abundance of SnoSP1 was found in high levels during the last larval stage and decreased gradually during the pupal stage. Very low levels of this mRNA were detected in larvae that were preparing to enter diapause, but mRNA dramatically increased in those that were in diapause as well as in those that terminate diapause.

UI MeSH Term Description Entries
D007605 Juvenile Hormones Compounds, either natural or synthetic, which block development of the growing insect. Insect Growth Regulator,Insect Growth Regulators,Juvenile Hormone,Growth Regulators, Insect,Regulators, Insect Growth,Growth Regulator, Insect,Hormone, Juvenile,Hormones, Juvenile,Regulator, Insect Growth
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D009036 Moths Insects of the suborder Heterocera of the order LEPIDOPTERA. Antheraea,Giant Silkmoths,Giant Silkworms,Silkmoths, Giant,Silkworms, Giant,Antheraeas,Giant Silkmoth,Giant Silkworm,Moth,Silkmoth, Giant,Silkworm, Giant
D009479 Neuropeptides Peptides released by NEURONS as intercellular messengers. Many neuropeptides are also hormones released by non-neuronal cells. Neuropeptide
D010802 Phylogeny The relationships of groups of organisms as reflected by their genetic makeup. Community Phylogenetics,Molecular Phylogenetics,Phylogenetic Analyses,Phylogenetic Analysis,Phylogenetic Clustering,Phylogenetic Comparative Analysis,Phylogenetic Comparative Methods,Phylogenetic Distance,Phylogenetic Generalized Least Squares,Phylogenetic Groups,Phylogenetic Incongruence,Phylogenetic Inference,Phylogenetic Networks,Phylogenetic Reconstruction,Phylogenetic Relatedness,Phylogenetic Relationships,Phylogenetic Signal,Phylogenetic Structure,Phylogenetic Tree,Phylogenetic Trees,Phylogenomics,Analyse, Phylogenetic,Analysis, Phylogenetic,Analysis, Phylogenetic Comparative,Clustering, Phylogenetic,Community Phylogenetic,Comparative Analysis, Phylogenetic,Comparative Method, Phylogenetic,Distance, Phylogenetic,Group, Phylogenetic,Incongruence, Phylogenetic,Inference, Phylogenetic,Method, Phylogenetic Comparative,Molecular Phylogenetic,Network, Phylogenetic,Phylogenetic Analyse,Phylogenetic Clusterings,Phylogenetic Comparative Analyses,Phylogenetic Comparative Method,Phylogenetic Distances,Phylogenetic Group,Phylogenetic Incongruences,Phylogenetic Inferences,Phylogenetic Network,Phylogenetic Reconstructions,Phylogenetic Relatednesses,Phylogenetic Relationship,Phylogenetic Signals,Phylogenetic Structures,Phylogenetic, Community,Phylogenetic, Molecular,Phylogenies,Phylogenomic,Reconstruction, Phylogenetic,Relatedness, Phylogenetic,Relationship, Phylogenetic,Signal, Phylogenetic,Structure, Phylogenetic,Tree, Phylogenetic
D006605 Hibernation The dormant state in which some warm-blooded animal species pass the winter. It is characterized by narcosis and by sharp reduction in body temperature and metabolic activity and by a depression of vital signs. Hibernation, Artificial,Induced Hibernation,Artificial Hibernation,Artificial Hibernations,Hibernation, Induced,Hibernations,Induced Hibernations
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D012333 RNA, Messenger RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm. Messenger RNA,Messenger RNA, Polyadenylated,Poly(A) Tail,Poly(A)+ RNA,Poly(A)+ mRNA,RNA, Messenger, Polyadenylated,RNA, Polyadenylated,mRNA,mRNA, Non-Polyadenylated,mRNA, Polyadenylated,Non-Polyadenylated mRNA,Poly(A) RNA,Polyadenylated mRNA,Non Polyadenylated mRNA,Polyadenylated Messenger RNA,Polyadenylated RNA,RNA, Polyadenylated Messenger,mRNA, Non Polyadenylated

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