PMID- 17218258 OWN - NLM STAT- MEDLINE DCOM- 20070212 LR - 20231213 IS - 0092-8674 (Print) IS - 0092-8674 (Linking) VI - 128 IP - 1 DP - 2007 Jan 12 TI - PICH, a centromere-associated SNF2 family ATPase, is regulated by Plk1 and required for the spindle checkpoint. PG - 101-14 AB - We identify PICH (Plk1-interacting checkpoint "helicase"), a member of the SNF2 ATPase family, as an interaction partner and substrate of Plk1. Following phosphorylation of PICH on the Cdk1 site T1063, Plk1 is recruited to PICH and controls its localization. Starting in prometaphase, PICH accumulates at kinetochores and inner centromeres. Moreover, it decorates threads that form during metaphase before increasing in length and progressively diminishing during anaphase. PICH-positive threads connect sister kinetochores and are dependent on tension, sensitive to DNase, and exacerbated in response to premature loss of cohesins or inhibition of topoisomerase II, suggesting that they represent stretched centromeric chromatin. Depletion of PICH causes the selective loss of Mad2 from kinetochores and completely abrogates the spindle checkpoint, resulting in massive chromosome missegregation. These data identify PICH as a novel essential component of checkpoint signaling. We propose that PICH binds to catenated centromere-related DNA to monitor tension developing between sister kinetochores. FAU - Baumann, Christoph AU - Baumann C AD - Department of Cell Biology, Max Planck Institute of Biochemistry, D-82152 Martinsried, Germany. FAU - Korner, Roman AU - Korner R FAU - Hofmann, Kay AU - Hofmann K FAU - Nigg, Erich A AU - Nigg EA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cell JT - Cell JID - 0413066 RN - 0 (Calcium-Binding Proteins) RN - 0 (Cell Cycle Proteins) RN - 0 (DNA-Binding Proteins) RN - 0 (MAD2L1 protein, human) RN - 0 (Mad2 Proteins) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Repressor Proteins) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 3.6.4.- (DNA Helicases) RN - EC 3.6.4.12 (ERCC6L protein, human) RN - EC 5.99.1.3 (DNA Topoisomerases, Type II) SB - IM CIN - Cell. 2007 Jan 12;128(1):20-1. doi: 10.1016/j.cell.2006.12.022. PMID: 17218250 MH - Amino Acid Sequence MH - Calcium-Binding Proteins/metabolism MH - Cell Cycle Proteins/*metabolism MH - Centromere/*metabolism MH - DNA Helicases/chemistry/deficiency/*metabolism MH - DNA Topoisomerases, Type II/metabolism MH - DNA-Binding Proteins/chemistry/deficiency/*metabolism MH - HeLa Cells MH - Humans MH - Kinetochores/metabolism MH - Mad2 Proteins MH - Mitosis MH - Models, Biological MH - Molecular Sequence Data MH - Protein Binding MH - Protein Serine-Threonine Kinases/*metabolism MH - Protein Structure, Tertiary MH - Protein Transport MH - Proto-Oncogene Proteins/*metabolism MH - Repressor Proteins/metabolism MH - Signal Transduction MH - Spindle Apparatus/*metabolism MH - Substrate Specificity MH - Polo-Like Kinase 1 EDAT- 2007/01/16 09:00 MHDA- 2007/02/13 09:00 CRDT- 2007/01/16 09:00 PHST- 2006/06/07 00:00 [received] PHST- 2006/09/06 00:00 [revised] PHST- 2006/11/02 00:00 [accepted] PHST- 2007/01/16 09:00 [pubmed] PHST- 2007/02/13 09:00 [medline] PHST- 2007/01/16 09:00 [entrez] AID - S0092-8674(06)01551-0 [pii] AID - 10.1016/j.cell.2006.11.041 [doi] PST - ppublish SO - Cell. 2007 Jan 12;128(1):101-14. doi: 10.1016/j.cell.2006.11.041.