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- Artem Barski, Suresh Cuddapah, Kairong Cui, Tae-Young Roh, Dustin E. Schones, Zhibin Wang +3 others
- Cell
- 2007

Histone modifications are implicated in influencing gene expression. We have generated high-resolution maps for the genome-wide distribution of 20 histone lysine and arginine methylations as well as histone variant H2A.Z, RNA polymerase II, and the insulator binding protein CTCF across the human genome using the Solexa 1G sequencing technology. Typical… (More)

- I Chepelev, A A Tseytlin
- 1997

We address the issue of correspondence between classical supergravity and quantum super Yang-Mills (or Matrix theory) expressions for the long-distance, low-velocity interaction potentials between 0-branes and bound states of branes. The leading-order potentials are reproduced by the F 4 terms in the 1-loop SYM effective action. Using self-consistency… (More)

- I Chepelev, A A Tseytlin
- 1997

We discuss long-distance, low-velocity interaction potentials for processes involving longitudinal M5-brane (corresponding in type IIA theory language to the 1/4 supersymmetric bound state of 4-brane and 0-brane). We consider the following scattering configurations: (a) D = 11 graviton off longitudinal M5-brane, or, equivalently, 0-branes off marginal 40… (More)

- I Chepelev, Y Makeenko, K Zarembo
- 1997

We discuss properties of D-brane configurations in the matrix model of type IIB superstring recently proposed by Ishibashi, Kawai, Kitazawa and Tsuchiya. We calculate central charges in supersymmetry algebra at infinite N and associate them with one-and five-branes present in IIB superstring theory. We consider classical solutions associated with three-and… (More)

- I Scalars, Iouri Chepelev, Radu Roiban
- 1999

A noncommutative Feynman graph is a ribbon graph and can be drawn on a genus g 2-surface with a boundary. We formulate a general convergence theorem for the noncommutative Feynman graphs in topological terms and prove it for some classes of diagrams in the scalar field theories. We propose a noncommutative analog of Bogoliubov-Parasiuk's recursive… (More)

- Artem Barski, Suresh Cuddapah, Kairong Cui, Tae-Young Roh, Dustin E. Schones, Zhibin Wang +3 others
- Cell
- 2007

tered at +120 bp, the following ones at +300 and +480, respectively. RNA POL II sits right on the TSS. In the upstream region, we observe no periodic signal indicative of regular nucleosome positioning (phasing) across promoters. The closest nucleosomes are located around position −180 leaving a minimal nucleosome-free promoter region of 150 bp. As the… (More)

Epigenetic control is an important aspect of gene regulation. Despite detailed understanding of protein-coding gene expression, the transcription of noncoding RNA genes by RNA polymerase III (Pol III) is less well characterized. Here we profile the epigenetic features of Pol III target genes throughout the human genome. This reveals that the chromatin… (More)

- Iouri Chepelev, Radu Roiban
- 2000

We present a rigorous proof of the convergence theorem for the Feynman graphs in arbitrary massive Euclidean quantum field theories on non-commutative R d (NQFT). We give a detailed classification of divergent graphs in some massive NQFT and demonstrate the renormalizability of some of these theories.

- I Chepelev, A A Tseytlin
- 1998

We compute long-distance interaction potentials between certain 1/2 and 1/4 supersymmetric D-brane configurations of type IIB theory, demonstrating detailed agreement between classical supergravity and one-loop instanton matrix model results. This confirms the interpretation of D-branes as described by classical matrix model backgrounds as being 'populated'… (More)

Although the function of DNA methylation in gene promoter regions is well established in transcriptional repression, the function of the evolutionarily conserved widespread distribution of DNA methylation in gene body regions remains incompletely understood. Here, we show that DNA methylation is enriched in included alternatively spliced exons (ASEs), and… (More)