کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9126974 1569966 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Double hairpin elements and tandem repeats in the non-coding region of Adenoides eludens chloroplast gene minicircles
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی ژنتیک
پیش نمایش صفحه اول مقاله
Double hairpin elements and tandem repeats in the non-coding region of Adenoides eludens chloroplast gene minicircles
چکیده انگلیسی
Dinoflagellate plastid genomes are unique in having a reduced number of genes, most of which are found on unigenic minicircles of 2-3 kb. Although the dinoflagellate Adenoides eludens has larger minicircles of about 5 kb, they still carry only one gene. In addition, digenic circles of about 10 kb were detected and mapped by PCR. The non-coding regions of both unigenic and digenic circles share a number of common features including a pair of conserved cores in opposite orientation, four large families of tandem repeats and a number of double hairpin elements (DHEs). They most closely resemble the non-coding regions of the Symbiodinium psbA minicircles, but are much longer, less conserved and have an even greater variety of DHEs and tandem repeats. The presence of so many recombinogenic elements suggests models for the origin of minicircles from a multigenic ancestral chloroplast genome, and raises the possibility of recombination-directed replication rather than defined replication origins in the minicircles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gene - Volume 358, 26 September 2005, Pages 102-110
نویسندگان
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