Chromosome mobility during meiotic prophase in Saccharomyces cerevisiae.

ABSTRACT: In many organisms, a synaptonemal complex (SC) intimately connects each pair of homologous chromosomes during much of the first meiotic prophase and is thought to play a role in regulating recombination. In the yeast Saccharomyces cerevisiae, the central element of each SC contains Zip1, a protein orthologous to mammalian SYCP1. To study the dynamics of SCs in living meiotic cells, a functional ZIP1::GFP fusion was introduced into yeast and analyzed by fluorescence video microscopy. During pachytene, SCs exhibited dramatic and continuous movement throughout the nucleus, traversing relatively large distances while twisting, folding, and unfolding. Chromosomal movements were accompanied by changes in the shape of the nucleus, and all movements were reversibly inhibited by the actin antagonis

SUBMITTER: Scherthan H 

PROVIDER: S-EPMC2040470 | biostudies-literature | 2007 Oct

REPOSITORIES: biostudies-literature