Distribution of sequence-dependent curvature in genomic DNA sequences (CROSBI ID 78791)
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Podaci o odgovornosti
Gabrielian, Andrei ; Vlahoviček, Kristian ; Pongor, Sandor
engleski
Distribution of sequence-dependent curvature in genomic DNA sequences
The distribution of inherent, sequence-dependent curvature, vas calculated for a number of prokaryotic (M. genitalium, H. influenzae, M. jannaschii, viral (adenovirus 2, equine herpes virus 1), phage (M13, lambda), eukaryotic (S, cerevisiae) and mitochondrial genomes as well as E. coli and human genomic fragments, The genomic averages are in the range of 6-8 degrees/helical turn and only about 20% of DNA is curved less than 3 degrees/helical turn, The prokaryotes and phages appear to have a consistently higher frequency of curved DNA in their genomes than the other genomes tested, Long, highly curved segments, similar to artificially designed curved DNA, are apparently absent from the genomes, Short, curved segments, differing in G+C content may provide environmentally modulated conformational signals for gene regulation, A WWW-server was constructed for the prediction of curved sites from DNA sequences.
DNA structure ; DNA curvature ; genome analysis
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