Research Project
Grant-in-Aid for Scientific Research (B)
In the eukaryotic nucleus, DNA exists as a nucleoprotein complex termed chromatin. The work is based on the hypothesis that chromatin dynamics and structure are an integral component of the analysis of DNA-dependent processes. Posttranslational histone modifications are important for the regulation of many biological phenomena. In this project, we clafified that a precise role for histone acetylation, namely to alter the structure of nucleosomes and facilitate the loss of H2A-H2B dimmers that have been previously remodeled by the action of ATP-dependent chromatin remodeling complexes. We also clarified that transcription from chromatin templates is ordered and sequential, with precise timing and roles for ATP-dependent chromatin remodeling, subsequent histone acetylation and alterations in nucleosome structure. In addition we found that histone H2A is phosphorylated by unique kinase. We found that NHK-1-catalyzed phosphorylation of a conserved serine/threonine residue in H2A is a new component of the histone code which might be related to cell cycle progression.
All 2004 2003 Other
All Journal Article (22 results) Book (3 results) Publications (3 results)
Genes Dev 18
Pages: 877-888
J Biol Chem 279
Pages: 23661-23667
Biochem Biophys Res Commun 317
Pages: 259-264
Pages: 9698-9702
Cell 113
Pages: 905-917
Curr Top Microbiol Immunol 274
Pages: 1-22
実験医学 21
Pages: 1398-1401
Pages: 1402-1407
蛋白質核酸酵素 48
Pages: 2234-2240
Jikkenigaku 21
110000013990
Tanpakushitu Kakusan Koso 48