title: TA-periodic ("601"-like) centromeric nucleosomes of A. thaliana.
abstract: The bulk of strong nucleosomes (SNs, with visibly periodic DNA sequences) is described by consensus pattern of 5 or 6 base runs of purines alternating with similar runs of pyrimidines - RR/YY SNs. Yet, the strongest known nucleosome positioning sequence, the 601 clone of Lowary and Widom, is rather periodic repetition of TA dinucleotides following one another every 10 bases. We located "601"-like TA-periodic sequences in the genome of A. thaliana. Several families of such sequences are discovered repeating almost exclusively in centromeres. Thus, while A. thaliana SNs of RR/YY type have strong affinity to pericentromeric regions, as it has been previously found, the SNs of TA periodic type concentrate rather in centromeres.
authors.affiliation: a Genome Diversity Center, Institute of Evolution , University of Haifa , Haifa , Israel.
authors.forename: Reshma
authors.initials: R
authors.lastname: Nibhani
authors.affiliation: a Genome Diversity Center, Institute of Evolution , University of Haifa , Haifa , Israel.
authors.forename: Edward N
authors.initials: EN
authors.lastname: Trifonov
mesh_terms: D017360:Arabidopsis / Q000235:genetics*; D020029:Base Pairing; D001483:Base Sequence; D002503:Centromere / Q000378:metabolism*; D032461:Chromosomes, Plant / Q000235:genetics; D004276:DNA, Satellite / Q000235:genetics; D008969:Molecular Sequence Data; D009707:Nucleosomes / Q000378:metabolism*; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics
chemical_list: D004276:DNA, Satellite; D009707:Nucleosomes
keywords: RR/YY SNs; TA dinucleotide; TA periodic SNs; centromere; clone 601; columns; periodicity; strong nucleosome