کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1976682 1060700 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stable minihairpin structures forming at minisatellite DNA isolated from yellow fin sea bream Acanthopagrus latus
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Stable minihairpin structures forming at minisatellite DNA isolated from yellow fin sea bream Acanthopagrus latus
چکیده انگلیسی

The lengths of simple repeat sequences are generally unstable or polymorphic (highly variable with respect to the numbers of tandem repeats). Previously we have isolated a family of minisatellite DNA (GenBank accession AF422186) that appears specifically and abundantly in the genome of yellow fin sea bream Acanthopagrus latus but not in closely-related red sea bream Pagrus major, and found that the numbers of tandem arrays in the homologous loci are polymorphic. This means that the minisatellite sequence has appeared and propagated in A. latus genome after speciation. In order to understand what makes the minisatellite widespread within the A. latus genome and what causes the polymorphic nature of the number of tandem repeats, the structural features of single-stranded polynucleotides were analyzed by electrophoresis, chemical modification, circular dichroism (CD), differential scanning calorimetry (DSC) and electron microscopy. The results suggest that a portion of the repeat unit forms a stable minihairpin structure, and it can cause polymerase pausing within the minisatellite DNA.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology - Volume 146, Issue 3, March 2007, Pages 427–437
نویسندگان
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