抄録
In most eukaryotes, replication origins are composed of long chromosome regions, and the exact sequences required for origin recognition complex (ORC) and minichromosome maintenance (MCM) complex association remain elusive. Here, we show that two stretches of adenine/thymine residues are collectively essential for a fission yeast chromosomal origin. Chromatin immunoprecipitation assays revealed that the ORC subunits are located within a 1 kb region of ori2004. Analyses of deletion derivatives of ori2004 showed that adenine stretches are required for ORC binding in vivo. Synergistic interaction between ORC and adenine stretches was observed. On the other hand, MCM subunits were localized preferentially to a region near the initiation site, which is distant from adenine stretches. This association was dependent on adenine stretches and stimulated by a non-adenine element. Our results suggest that association of multiple ORC molecules with a replication origin is required for efficient MCM loading and origin firing in fission yeast.
本文言語 | 英語 |
---|---|
ページ(範囲) | 964-974 |
ページ数 | 11 |
ジャーナル | EMBO Journal |
巻 | 22 |
号 | 4 |
DOI | |
出版ステータス | 出版済み - 2月 17 2003 |
外部発表 | はい |
!!!All Science Journal Classification (ASJC) codes
- 神経科学(全般)
- 分子生物学
- 生化学、遺伝学、分子生物学(全般)
- 免疫学および微生物学(全般)