A Co-opted gypsy-type LTR-Retrotransposon Is Conserved in the Genomes of Humans, Sheep, Mice, and Rats
نویسندگان
چکیده
منابع مشابه
A Co-opted gypsy-type LTR-Retrotransposon Is Conserved in the Genomes of Humans, Sheep, Mice, and Rats
One subset of sequences present within mammalian genomes is the retroelements, which include endogenous retroviruses and retrotransposons. While there are typically thousands of copies of endogenous retroviruses within mammalian hosts, almost no LTR-retrotransposon-like sequences have been identified. Here, we report the presence of a remarkably intact and conserved gypsy-type LTR-retrotranspos...
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A Highly Conserved, Small LTR Retrotransposon that Preferentially Targets Genes in Grass Genomes
LTR retrotransposons are often the most abundant components of plant genomes and can impact gene and genome evolution. Most reported LTR retrotransposons are large elements (>4 kb) and are most often found in heterochromatic (gene poor) regions. We report the smallest LTR retrotransposon found to date, only 292 bp. The element is found in rice, maize, sorghum and other grass genomes, which indi...
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هدف از آزمایش اول بررسی اثر سطوح مختلف سریسین [0 (control), 0.1, 0.5, 1.0, 2.5 %] افزوده شده به محیط , ivm بر cumulus cell expansion، بلوغ هسته و توسعه متوالی جنین، در گوسفندان نژاد سنجابی در فصل تولید مثلی می باشد. از سرگیری میوز به وسیله خارج شدن اولین پولار بادی اندازه گیری و هم چنین درصد رسیدن جنین های دو سلولی به مرحله کلیواژ و بلاستوسیت نیز به عنوان نشانه ای از میزان شایستگی توسعه اولیه ج...
the effect of e-64 on the developmental competence of sheep cocs during in vitro maturation
in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.
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ژورنال
عنوان ژورنال: Current Biology
سال: 2003
ISSN: 0960-9822
DOI: 10.1016/s0960-9822(03)00618-3