Gata factor translation is the final downstream step in the amino acid/tor-mediated vitellogenin gene expression in the anautogenous mosquito aedes aegypti.
'Ingestion of blood is required for vector mosquitoes to initiate reproductive cycles determining their role as vectors of devastating human diseases. Nutritional signaling plays a pivotal role in regulating mosquito reproduction. Transcription of yolk protein precursor genes is repressed until mosquitoes take blood. Previously, we have shown that to signal ... More
Inwardly rectifying K+ (Kir) channels in Drosophila. A crucial role of cellular milieu factors Kir channel function.
'Three cDNAs encoding inwardly rectifying potassium (Kir) channels were isolated from Drosophila melanogaster. The protein sequences of Drosophila KirI (dKirI) and dKirII are moderately (<44%) and dKirIII sequence is weakly (<27%) identical to human Kir channel subunits. During fly development, five dKir channel transcripts derived from three genes are differentially ... More
Methylation-mediated transcriptional silencing in euchromatin by methyl-CpG binding protein MBD1 isoforms.
Authors:Fujita N, Takebayashi S, Okumura K, Kudo S, Chiba T, Saya H, Nakao M
Journal:Mol Cell Biol
PubMed ID:10454587
DNA methylation of promoter-associated CpG islands is involved in the transcriptional repression of vertebrate genes. To investigate the mechanisms underlying gene inactivation by DNA methylation, we characterized a human MBD1 protein, one of the components of MeCP1, which possesses a methyl-CpG binding domain (MBD) and cysteine-rich (CXXC) domains. Four novel ... More
A baculovirus superinfection system: efficient vehicle for gene transfer into drosophila S2 cells.
Authors:Lee DF, Chen CC, Hsu TA, Juang JL
Journal:J Virol
PubMed ID:11090187
The baculovirus expression vector system is considered to be a safe, powerful, but cell-lytic heterologous protein expression system in insect cells. We show here that there is a new baculovirus system for efficient gene transfer and expression using the popular and genetically well-understood Drosophila S2 cells. The recombinant baculovirus was ... More
The eukaryotic DNMT2 genes encode a new class of cytosine-5 DNA methyltransferases.
Authors:Tang LY, Reddy MN, Rasheva V, Lee TL, Lin MJ, Hung MS, Shen CK,
Journal:J Biol Chem
PubMed ID:12819212
DNMT2 is a subgroup of the eukaryotic cytosine-5 DNA methyltransferase gene family. Unlike the other family members, proteins encoded by DNMT2 genes were not known before to possess DNA methyltransferase activities. Most recently, we have shown that the genome of Drosophila S2 cells stably expressing an exogenous Drosophila dDNMT2 cDNA ... More