Uneven distribution of potential triplex sequences in the human genome. In silico study using the R/Bioconductor package triplex.

LEXA, Matej, Tomáš MARTÍNEK a Marie BRÁZDOVÁ. Uneven distribution of potential triplex sequences in the human genome. In silico study using the R/Bioconductor package triplex. In Oscar Pastor, Christine Sinoquet, Guy Plantier, Tanja Schultz, Ana L. N. Fred, Hugo Gamboa. Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms. Angers, France: SciTePress. s. 80-88. ISBN 978-989-758-012-3. doi:10.5220/0004824100800088. 2014.

Základní údaje

• Originální název: Uneven distribution of potential triplex sequences in the human genome. In silico study using the R/Bioconductor package triplex.
• Autoři: LEXA, Matej (703 Slovensko, garant, domácí), Tomáš MARTÍNEK (203 Česká republika) a Marie BRÁZDOVÁ (203 Česká republika).
• Vydání: Angers, France, Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms, od s. 80-88, 9 s. 2014.
• Nakladatel: SciTePress

Další údaje

• Originální jazyk: angličtina
• Typ výsledku: Stať ve sborníku
• Obor: 10201 Computer sciences, information science, bioinformatics
• Stát vydavatele: Francie
• Utajení: není předmětem státního či obchodního tajemství
• Forma vydání: tištěná verze "print"
• WWW: URL
• Kód RIV: RIV/00216224:14330/14:00074890
• Organizační jednotka: Fakulta informatiky
• ISBN: 978-989-758-012-3
• Doi: http://dx.doi.org/10.5220/0004824100800088
• Klíčová slova anglicky: Human genome; DNA sequence; Non-B-DNA; Triplex; Bioconductor; Repetitive sequences; Mobile DNA; Lexicographically minimal rotation
• Příznaky: Mezinárodní význam, Recenzováno

Anotace

Eukaryotic genomes are rich in sequences capable of forming non-B DNA structures. These structures are expected to play important roles in natural regulatory processes at levels above those of individual genes, such as whole genome dynamics or chromatin organization, as well as in processes leading to the loss of these functions, such as cancer development. Recently, a number of authors have mapped the occurrence of potential quadruplex sequences in the human genome and found them to be associated with promoters. In this paper, we set out to map the distribution and characteristics of potential triplex-forming sequences in human genome DNA sequences. Using the R/Bioconductor package {\it triplex}, we found these sequences to be excluded from exons, while present mostly in a small number of repetitive sequence classes, especially short sequence tandem repeats (microsatellites), Alu and combined elements, such as SVA. We also introduce a novel way of classifying potential triplex sequences, using a lexicographically minimal rotation of the most frequent k-mer to assign class membership automatically. Members of such classes typically have different propensities to form parallel and antiparallel intramolecular triplexes (H-DNA). We observed an interesting pattern, where the predicted third strands of antiparallel H-DNA were much less likely to contain a deletion against their duplex structural counterpart than were their parallel versions.

Návaznosti

• EE2.3.20.0189, projekt VaV: Název: Rozvoj výzkumné excelence v oblasti evoluční cytogenomiky, epigenetiky a buněčné signalizace