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Rewiring Mid1p-independent medial division in fission yeast
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Tao, Evelyn Yaqiong, Calvert, Meredith and Balasubramanian, M. J. (2014) Rewiring Mid1p-independent medial division in fission yeast. Current Biology, Volume 24 (Number 18). pp. 2181-2188. doi:10.1016/j.cub.2014.07.074 ISSN 0960-9822.
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Official URL: http://dx.doi.org/10.1016/j.cub.2014.07.074
Abstract
Correct positioning of the cell division machinery is key to genome stability. Schizosaccharomyces pombe is an attractive organism to study cytokinesis as it, like higher eukaryotes, divides using a contractile actomyosin ring. In S. pombe, many actomyosin ring components assemble at the medial cortex into node-like structures before coalescing into a ring [ 1 and 2]. Assembly of cytokinetic nodes requires Mid1p, which recruits IQGAP-related Rng2p to the division site, after which other node components accumulate at the division site in a characteristic sequence [ 3, 4, 5 and 6]. How cytokinetic nodes assemble, whether the order of assembly of ring components is important, and whether Mid1p solely participates in ring positioning are poorly understood. Here, we show that synthetic targeting of IQGAP-related Rng2p, formin-Cdc12p, and myosin II (Myo2p) restores medial division in mid1 mutants, suggesting that ring proteins need not assemble at the division site in an invariant order. Unlike in wild-type cells, actomyosin rings in cells rewired to divide medially in the absence of Mid1p assemble late in anaphase. Furthermore, the rewiring process affects the ability of the actomyosin ring to track the nucleus upon perturbation of nuclear position. Our work reveals the power of synthetic rewiring studies in deciphering roles performed by multifunctional proteins.
Item Type: | Journal Article | ||||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences > Cell & Developmental Biology Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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Journal or Publication Title: | Current Biology | ||||||||||
Publisher: | Cell Press | ||||||||||
ISSN: | 0960-9822 | ||||||||||
Official Date: | 22 September 2014 | ||||||||||
Dates: |
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Volume: | Volume 24 | ||||||||||
Number: | Number 18 | ||||||||||
Page Range: | pp. 2181-2188 | ||||||||||
DOI: | 10.1016/j.cub.2014.07.074 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access |
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