Format

Send to

Choose Destination
Cell. 2008 Jun 27;133(7):1188-201. doi: 10.1016/j.cell.2008.04.050.

Meiotic chromosomes move by linkage to dynamic actin cables with transduction of force through the nuclear envelope.

Author information

1
Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.

Abstract

Chromosome movement is prominent during meiosis. Here, using a combination of in vitro and in vivo approaches, we elucidate the basis for dynamic mid-prophase telomere-led chromosome motion in budding yeast. Diverse findings reveal a process in which, at the pachytene stage, individual telomere/nuclear envelope (NE) ensembles attach passively to, and then move in concert with, nucleus-hugging actin cables that are continuous with the global cytoskeletal actin network. Other chromosomes move in concert with lead chromosome(s). The same process, in modulated form, explains the zygotene "bouquet" configuration in which, immediately preceding pachytene, chromosome ends colocalize dynamically in a restricted region of the NE. Mechanical properties of the system and biological roles of mid-prophase movement for meiosis, including recombination, are discussed.

PMID:
18585353
PMCID:
PMC2601696
DOI:
10.1016/j.cell.2008.04.050
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center