David J Lanzotti

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Replication-associated histone genes encode the only metazoan mRNAs that lack polyA tails, ending instead in a conserved 26-nt sequence that forms a stem-loop. Most of the regulation of mammalian histone mRNA is posttranscriptional and mediated by this unique 3' end. Stem-loop-binding protein (SLBP) binds to the histone mRNA 3' end and is thought to(More)
In metazoans, the 3' end of histone mRNA is not polyadenylated but instead ends with a stem-loop structure that is required for cell cycle-regulated expression. The sequence of the stem-loop in the Drosophila melanogaster histone H2b, H3, and H4 genes is identical to the consensus sequence of other metazoan histone mRNAs, but the sequence of the stem-loop(More)
This study investigates the effect of ethanol ingestion on antioxidant enzymes (AOE) and lipid peroxidation (malondialdehyde, (MDA) in different brain regions of the rat after acute exercise. Acute exercise (100% VO2max) significantly increased glutathione peroxidase (GSH-Px) activity and decreased glutathione reductase (GR) activity in the cerebral cortex.(More)
Metazoan replication-dependent histone mRNAs accumulate to high levels during S phase as a result of an increase in the rate of histone gene transcription, pre-mRNA processing, and mRNA stability at the G1-S transition. However, relatively little is known about the contribution of these processes to histone expression in the cell cycles of early(More)
Stem-loop binding protein (SLBP) is an essential component of the histone pre-mRNA processing machinery. SLBP protein expression was examined during Drosophila development by using transgenes expressing hemagglutinin (HA) epitope-tagged proteins expressed from the endogenous Slbp promoter. Full-length HA-dSLBP complemented a Slbp null mutation,(More)
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