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© Research
Publication : Cell

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

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Cell - 27 Jun 2008

Koszul R, Kim KP, Prentiss M, Kleckner N, Kameoka S

Link to Pubmed [PMID] – 18585353

Cell 2008 Jun;133(7):1188-201

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.

http://www.ncbi.nlm.nih.gov/pubmed/18585353