Multiple phases of nucleosomes in the hsp 70 genes of Drosophila melanogaster.
نویسندگان
چکیده
The arrangement of the nucleosomes with respect to the DNA sequence has been examined in the genes coding for the major heat shock protein (hsp 70) in Drosophila. In the repressed state of the genes, the nucleosomes are precisely phased in at least three frames.
منابع مشابه
Aconitase and Developmental EndPointsasEarly IndicatorsofCellularToxicity Induced by Xenobiotics in Drosophila Melanogaster
Background: In this study, the toxicity of the different xenobiotics was tested on the fruit fly Drosophila melanogaster model system. Methods: Fly larvae were raised on food supplemented with xenobioticsat different concentrations (sodium nitroprusside (0.1-1.5 mM), S-nitrosoglutathione (0.5-4 mM), and potassium ferrocyanide (1 mM)). Emergence of flies, food intake by larvae, and pupation h...
متن کاملConcentration dependent effect of morphine, aspirin, capsaicin and chili pepper hydro alcoholic extract on thermal and chemical pain model in fruit fly (Drosophila melanogaster)
Introduction: Pain research using animal models is related to ethical concerns, so invertebrates and insects have been recommended by researchers. In the present study, the nociceptive and antinociceptive effects of capsaicin, aspirin, morphine and chili extract were examined using fruit fly (Drosophila melanogaster) as an alternative for rodent pain model. Methods: Stage 3 of larvae and ad...
متن کاملToxicological Evaluation of a New Lepidopteran Insecticide, Flubendiamide, in Non-Target Drosophila melanogaster Meigen (Diptera: Drosophilidae)
Background: Flubendiamide, comparatively a new pesticide designed to eradicate lepidopteran insect pests is known to have low risk to birds, mammals, fish, algae, honey bees, non-target arthropods, earthworms, soil macro- and micro-organisms, non-target plants as well as sewage treatment organisms; however, the risk assessment for aquatic invertebrates from metabolite could not be finalized wit...
متن کاملMorphological and molecular modifications induced by heat shock in Drosophila melanogaster embryos.
The early embryo of Drosophila melanogaster did not survive treatment at 37 degrees C (heat shock) for 25 min. The histological analysis of eggs treated in this way showed that the heat shock caused disintegration of nuclei and of cytoplasmic islands, displacement and swelling of nuclei and blocked mitoses. These effects were not observed in embryos treated after blastoderm formation. After thi...
متن کاملTwo genes for the major heat-shock protein of Drosophila melanogaster arranged as an inverted repeat.
The physical maps of three cloned D. melanogaster DNA fragments with genes for the 70,000 dalton heat-shock protein (hsp 70) are presented. Fragment 122 contains two genes in diverging orientation, forming an inverted repeat around a central spacer. The other two fragments, which are found as polymorphic variants in the fly population, have related structures; they differ by the deletion or the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Nucleic acids research
دوره 8 24 شماره
صفحات -
تاریخ انتشار 1980