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Step-Wise Methylation of Histone H3K9 Positions Heterochromatin at the Nuclear Periphery
The factors that sequester transcriptionally repressed heterochromatin at the nuclear periphery are currently unknown. In a genome-wide RNAi screen, we found that depletion of S-adenosylmethionineExpand
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Automatic tracking of individual fluorescence particles: application to the study of chromosome dynamics
We present a new, robust, computational procedure for tracking fluorescent markers in time-lapse microscopy. Expand
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Histone H3 and H4 N-termini interact with SIR3 and SIR4 proteins: A molecular model for the formation of heterochromatin in yeast
The silent mating loci and chromosomal regions adjacent to telomeres of S. cerevisiae have features similar to heterochromatin of more complex eukaryotes. Transcriptional repression at these sitesExpand
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Separation of silencing from perinuclear anchoring functions in yeast Ku80, Sir4 and Esc1 proteins
In budding yeast, the nuclear periphery forms a subcompartment in which telomeres cluster and SIR proteins concentrate. To identify the proteins that mediate chromatin anchorage to the nuclearExpand
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Nuclear pore association confers optimal expression levels for an inducible yeast gene
The organization of the nucleus into subcompartments creates microenvironments that are thought to facilitate distinct nuclear functions. In budding yeast, regions of silent chromatin, such as thoseExpand
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Recruitment of the INO80 Complex by H2A Phosphorylation Links ATP-Dependent Chromatin Remodeling with DNA Double-Strand Break Repair
The budding yeast INO80 complex is a conserved ATP-dependent nucleosome remodeler containing actin-related proteins Arp5 and Arp8. Strains lacking INO80, ARP5, or ARP8 have defects in transcription.Expand
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The yeast Sgs1p helicase acts upstream of Rad53p in the DNA replication checkpoint and colocalizes with Rad53p in S-phase-specific foci.
We have examined the cellular function of Sgs1p, a nonessential yeast DNA helicase, homologs of which are implicated in two highly debilitating hereditary human diseases (Werner's and Bloom'sExpand
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Functional Targeting of DNA Damage to a Nuclear Pore-Associated SUMO-Dependent Ubiquitin Ligase
Recent findings suggest important roles for nuclear organization in gene expression. In contrast, little is known about how nuclear organization contributes to genome stability. Epistasis analysisExpand
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Long-range compaction and flexibility of interphase chromatin in budding yeast analyzed by high-resolution imaging techniques.
Little is known about how chromatin folds in its native state. Using optimized in situ hybridization and live imaging techniques have determined compaction ratios and fiber flexibility for interphaseExpand
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The clustering of telomeres and colocalization with Rap1, Sir3, and Sir4 proteins in wild-type Saccharomyces cerevisiae
We have developed a novel technique for combined immunofluorescence/in situ hybridization on fixed budding yeast cells that maintains the three-dimensional structure of the nucleus as monitored byExpand
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