کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5908061 | 1160974 | 2007 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Inversions and inverted transpositions as the basis for an almost universal “format” of genome sequences
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
ژنتیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Inversions and inverted transpositions as the basis for an almost universal “format” of genome sequences Inversions and inverted transpositions as the basis for an almost universal “format” of genome sequences](/preview/png/5908061.png)
چکیده انگلیسی
In genome duplexes that exceed 100Â kb the frequency distributions of their trinucleotides (triplet profiles) are the same in both strands. This remarkable symmetry, sometimes called Chargaff's second parity rule, is not the result of base pairing, but can be explained as the result of countless inversions and inverted transpositions that occurred throughout evolution (G. Albrecht-Buehler, 2006, Proc. Natl. Acad. Sci. USA 103, 17828-17833). Furthermore, comparing the triplet profiles of genomes from a large number of different taxa and species revealed that they were not only strand-symmetrical, but even surprisingly similar to one another (majority profile; G. Albrecht-Buehler, 2007, Genomics 89, 596-601). The present article proposes that the same inversion/transposition mechanism(s) that created the strand symmetry may also explain the existence of the majority profile. Thus they may be key factors in the creation of an almost universal “format” in which genome sequences are written. One may speculate that this universality of genome format may facilitate horizontal gene transfer and, thus, accelerate evolution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Genomics - Volume 90, Issue 3, September 2007, Pages 297-305
Journal: Genomics - Volume 90, Issue 3, September 2007, Pages 297-305
نویسندگان
Guenter Albrecht-Buehler,