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• W2015273793 endingPage "677" @default.
• W2015273793 startingPage "647" @default.
• W2015273793 abstract "Employing the whole-genome PCR technique, intermediate filaments (IFs) reconstituted from vimentin, desmin, and glial fibrillary acidic protein were shown to select repetitive and mobile DNA sequence elements from a mixture of mouse genomic DNA fragments. The bound fragments included major and minor satellite DNA, telomere DNA, minisatellites, microsatellites, short and long interspersed nucleotide elements (SINEs and LINEs), A-type particle elements, members of the mammalian retrotransposon-like (MaLR) family, and a series of repeats not assignable to major repetitive DNA families. The latter sequences were either similar to flanking regions of genes; possessed recombinogenic elements such as polypurine/polypyrimidine stretches, GT-rich arrays, or GGNNGG signals; or were characterized by the distribution of oligopurine and pyrimidine motifs whose sequential and vertical alignment resulted in patterns indicative of high recombination potentials of the respective sequences. The different IF species exhibited distinct quantitative differences in DNA selectivities. Complexes consisting of vimentin IFs and DNA fragments containing LINE, (GT)(n) microsatellite, and major satellite DNA sequences were saturable and dynamic and were formed with high efficiency only when the DNAs were partially denatured. The major-groove binder methyl green exerted a stronger inhibitory effect on the binding reaction than did the minor-groove binder distamycin A; the effects of the two compounds were additive. In addition, DNA footprinting studies revealed significant configurational changes in the DNA fragments on interaction with vimentin IFs. In the case of major satellite DNA, vimentin IFs provided protection of the T-rich strand from cleavage by DNase I, whereas the A-rich strand was totally degraded. Taken together, these observations suggest that IF protein(s) bind to double-stranded DNAs at existing single-stranded sites and, taking advantage of their helix-destabilizing potential, further unwind them via a cooperative effort of their N-terminal DNA-binding regions. A comparison of the present results with literature data, as well as a search in the NCBI database, showed that IF proteins are related to nuclear matrix attachment region (MAR)-binding proteins, and the DNA sequences they interact with are very similar or even identical to those involved in a plethora of DNA recombination and related repair events. On the basis of these comparisons, IF proteins are proposed to contribute in a global fashion, not only to genetic diversity, but also to genomic integrity, in addition to their role in gene expression." @default.
• W2015273793 created "2016-06-24" @default.
• W2015273793 creator A5055081612 @default.
• W2015273793 creator A5058010200 @default.
• W2015273793 creator A5059942450 @default.
• W2015273793 creator A5089203723 @default.
• W2015273793 date "2000-11-01" @default.
• W2015273793 modified "2023-10-16" @default.
• W2015273793 title "Intermediate Filaments Reconstituted from Vimentin, Desmin, and Glial Fibrillary Acidic Protein Selectively Bind Repetitive and Mobile DNA Sequences from a Mixture of Mouse Genomic DNA Fragments" @default.
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