S. pombe CLASP needs dynein, not EB1 or CLIP170, to induce microtubule instability and slows polymerization rates at cell tips in a dynein-dependent manner.
Craven, Rachel A
Wilks, Deepti P
Hagan, Iain M
AffiliationCancer Research UK Cell Division Group, Paterson Institute for Cancer Research, Manchester M20 4BX, United Kingdom.
MetadataShow full item record
AbstractThe Schizosaccharomyces pombe CLIP170-associated protein (CLASP) Peg1 was identified in a screen for mutants with spindle formation defects and a screen for molecules that antagonized EB1 function. The conditional peg1.1 mutant enabled us to identify key features of Peg1 function. First, Peg1 was required to form a spindle and astral microtubules, yet destabilized interphase microtubules. Second, Peg1 was required to slow the polymerization rate of interphase microtubules that establish end-on contact with the cortex at cell tips. Third, Peg1 antagonized the action of S. pombe CLIP170 (Tip1) and EB1 (Mal3). Fourth, although Peg1 resembled higher eukaryotic CLASPs by physically associating with both Mal3 and Tip1, neither Tip1 nor Mal3 was required for Peg1 to destabilize interphase microtubules or for it to associate with microtubules. Conversely, neither Mal3 nor Tip1 required Peg1 to associate with microtubules or cell tips. Consistently, while mal3.Delta and tip1.Delta disrupted linear growth, corrupting peg1 (+) did not. Fifth, peg1.1 phenotypes resembled those arising from deletion of the single heavy or both light chains of fission yeast dynein. Furthermore, all interphase phenotypes arising from peg1 (+) manipulation relied on dynein function. Thus, the impact of S. pombe CLASP on interphase microtubule behavior is more closely aligned to dynein than EB1 or CLIP170.
CitationS. pombe CLASP needs dynein, not EB1 or CLIP170, to induce microtubule instability and slows polymerization rates at cell tips in a dynein-dependent manner. 2006, 20 (17):2421-36 Genes Dev.
JournalGenes & Development
- Tip1/CLIP-170 protein is required for correct chromosome poleward movement in fission yeast.
- Authors: Goldstone S, Reyes C, Gay G, Courthéoux T, Dubarry M, Tournier S, Gachet Y
- Issue date: 2010 May 13
- Targeted movement of cell end factors in fission yeast.
- Authors: Browning H, Hackney DD, Nurse P
- Issue date: 2003 Sep
- The carboxy-terminus of Alp4 alters microtubule dynamics to induce oscillatory nuclear movement led by the spindle pole body in Schizosaccharomyces pombe.
- Authors: Masuda H, Miyamoto R, Haraguchi T, Hiraoka Y
- Issue date: 2006 Apr
- Reconstitution of a microtubule plus-end tracking system in vitro.
- Authors: Bieling P, Laan L, Schek H, Munteanu EL, Sandblad L, Dogterom M, Brunner D, Surrey T
- Issue date: 2007 Dec 13
- Self-organization of interphase microtubule arrays in fission yeast.
- Authors: Carazo-Salas RE, Nurse P
- Issue date: 2006 Oct