Systematic characterization of the conformation and dynamics of budding yeast chromosome XII.
Systematic characterization of the conformation and dynamics of budding yeast chromosome XII.
复制标题
DOI:
10.1083/jcb.201208186
复制
发表时间:
2013-07-22
期刊:
影响因子:
--
通讯作者:
Gadal O
中科院分区:
文献类型:
--
作者:
Albert B;Mathon J;Shukla A;Saad H;Normand C;Léger-Silvestre I;Villa D;Kamgoue A;Mozziconacci J;Wong H;Zimmer C;Bhargava P;Bancaud A;Gadal O
Comprehensive analysis of the intranuclear territories and motion of budding yeast chromosome XII loci suggests that long-range chromosome architecture is mainly determined by the physical principles of polymers. Chromosomes architecture is viewed as a key component of gene regulation, but principles of chromosomal folding remain elusive. Here we used high-throughput live cell microscopy to characterize the conformation and dynamics of the longest chromosome of Saccharomyces cerevisiae (XII). Chromosome XII carries the ribosomal DNA (rDNA) that defines the nucleolus, a major hallmark of nuclear organization. We determined intranuclear positions of 15 loci distributed every ∼100 kb along the chromosome, and investigated their motion over broad time scales (0.2–400 s). Loci positions and motions, except for the rDNA, were consistent with a computational model of chromosomes based on tethered polymers and with the Rouse model from polymer physics, respectively. Furthermore, rapamycin-dependent transcriptional reprogramming of the genome only marginally affected the chromosome XII internal large-scale organization. Our comprehensive investigation of chromosome XII is thus in agreement with recent studies and models in which long-range architecture is largely determined by the physical principles of tethered polymers and volume exclusion.
登录
查看更多内容
影响因子:
4.4
作者:
Cournac A;Marie-Nelly H;Marbouty M;Koszul R;Mozziconacci J
通讯作者:
Mozziconacci J
影响因子:
7.8
作者:
Klein, F;Laroche, T;Cardenas, M E;Hofmann, J F;Schweizer, D;Gasser, S M
通讯作者:
Gasser, S M
影响因子:
3.3
作者:
Guacci, V;Hogan, E;Koshland, D
通讯作者:
Koshland, D
影响因子:
16
作者:
Loewith, R;Jacinto, E;Hall, MN
通讯作者:
Hall, MN
影响因子:
1.6
作者:
Léger-Silvestre, I;Trumtel, S;Gas, N
通讯作者:
Gas, N