Puffs are localized Ca2+ signals that arise in oocytes in response to inositol 1,4,5-trisphosphate (IP3). They are analogous to the sparks of myocytes and are believed to be the result of the liberation of Ca2+ from the ...

Puffs are localized Ca2 + signals that arise in oocytes in response to inositol 1,4,5-trisphosphate (IP3). They are the result of the liberation of Ca2 + from the endoplasmic reticulum through the coordinated opening of ...

DNA puffs are genomic regions of polytene chromosomes that undergo developmentally controlled DNA amplification and transcription in salivary glands of sciarid flies. Here, we tested the hypothesis that DNA puff genes code ...

An hsc70 homologue gene (Rahsc70) of the diptera Rhynchosciara americana was isolated and characterized. We were able to determine the mRNA sequence from an EST of salivary gland cDNA library, and a Rahsc70 cDNA cassette ...

The sciarid DNA puff C4 BhC4-1 gene is amplified and transcribed in salivary glands at the end of the larval stage. In transgenic Drosophila, the BhC4-1 promoter drives transcription in prepupal salivary glands and in the ...

The 1991 explosive eruptions of Hudson volcano in southern Chile produced 2.7 km3 (dense rock equivalent) of basalt and trachyandesite tephra during the period August 8-15. The initial basaltic phase (phase I, August 8-9) ...

Abstract Background Core promoters are cis-regulatory modules to which bind the basal transcriptional machinery and which participate in the regulation of transcription ...

Abstract Background Core promoters are cis-regulatory modules to which bind the basal transcriptional machinery and which participate in the regulation of transcription ...

Background: Core promoters are cis-regulatory modules to which bind the basal transcriptional machinery and which participate in the regulation of transcription initiation. Although core promoters have not been extensively ...