PMID- 26075356 OWN - NLM STAT- MEDLINE DCOM- 20151022 LR - 20181113 IS - 1476-4679 (Electronic) IS - 1465-7392 (Linking) VI - 17 IP - 8 DP - 2015 Aug TI - Reconstitution of mitotic chromatids with a minimum set of purified factors. PG - 1014-23 LID - 10.1038/ncb3187 [doi] AB - The assembly of mitotic chromosomes, each composed of a pair of rod-shaped chromatids, is an essential prerequisite for accurate transmission of the genome during cell division. It remains poorly understood, however, how this fundamental process might be achieved and regulated in the cell. Here we report an in vitro system in which mitotic chromatids can be reconstituted by mixing a simple substrate with only six purified factors: core histones, three histone chaperones (nucleoplasmin, Nap1 and FACT), topoisomerase II (topo II) and condensin I. We find that octameric nucleosomes containing the embryonic variant H2A.X-F are highly susceptible to FACT and function as the most productive substrate for subsequent actions of topo II and condensin I. Cdk1 phosphorylation of condensin I is the sole mitosis-specific modification required for chromatid reconstitution. This experimental system will enhance our understanding of the mechanisms of action of individual factors and their cooperation during this process. FAU - Shintomi, Keishi AU - Shintomi K AD - Chromosome Dynamics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan. FAU - Takahashi, Tatsuro S AU - Takahashi TS AD - Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan. FAU - Hirano, Tatsuya AU - Hirano T AD - Chromosome Dynamics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150615 PL - England TA - Nat Cell Biol JT - Nature cell biology JID - 100890575 RN - 0 (DNA-Binding Proteins) RN - 0 (High Mobility Group Proteins) RN - 0 (Histones) RN - 0 (Molecular Chaperones) RN - 0 (Multiprotein Complexes) RN - 0 (Nucleoplasmins) RN - 0 (Nucleosomes) RN - 0 (SSRP1 protein, human) RN - 0 (Saccharomyces cerevisiae Proteins) RN - 0 (Transcriptional Elongation Factors) RN - 0 (Xenopus Proteins) RN - 0 (condensin complexes) RN - EC 2.7.11.22 (CDC2 Protein Kinase) RN - EC 3.6.1.- (Adenosine Triphosphatases) RN - EC 5.99.1.3 (DNA Topoisomerases, Type II) SB - IM CIN - Nat Cell Biol. 2015 Aug;17(8):964-5. doi: 10.1038/ncb3212. PMID: 26239527 CIN - Curr Biol. 2015 Aug 3;25(15):R663-6. doi: 10.1016/j.cub.2015.06.026. PMID: 26241143 MH - Adenosine Triphosphatases/metabolism MH - Animals MH - CDC2 Protein Kinase/metabolism MH - Chromatids/*enzymology MH - *Chromatin Assembly and Disassembly MH - DNA Topoisomerases, Type II/metabolism MH - DNA-Binding Proteins/metabolism MH - HeLa Cells MH - High Mobility Group Proteins/metabolism MH - Histones/genetics/*metabolism MH - Humans MH - Male MH - *Mitosis MH - Molecular Chaperones/genetics/*metabolism MH - Multiprotein Complexes/metabolism MH - Nucleoplasmins/metabolism MH - Nucleosomes/enzymology MH - Phosphorylation MH - Saccharomyces cerevisiae MH - Saccharomyces cerevisiae Proteins/genetics/*metabolism MH - Spermatozoa/*enzymology MH - Transcriptional Elongation Factors/metabolism MH - Transfection MH - Xenopus Proteins/genetics/*metabolism MH - Xenopus laevis EDAT- 2015/06/16 06:00 MHDA- 2015/10/23 06:00 CRDT- 2015/06/16 06:00 PHST- 2015/01/30 00:00 [received] PHST- 2015/05/12 00:00 [accepted] PHST- 2015/06/16 06:00 [entrez] PHST- 2015/06/16 06:00 [pubmed] PHST- 2015/10/23 06:00 [medline] AID - ncb3187 [pii] AID - 10.1038/ncb3187 [doi] PST - ppublish SO - Nat Cell Biol. 2015 Aug;17(8):1014-23. doi: 10.1038/ncb3187. Epub 2015 Jun 15.