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Viesturs Simanis

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Publications associées (33)

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Chemical genetic analysis of the regulatory role of Cdc2p in the S. pombe septation initiation network

Viesturs Simanis, Andrea Krapp

The protein kinase Cdc2p is the master regulator of cell cycle progression in the fission yeast Schizosaccharomyces pombe. It is required both for entry into mitosis and for onset of DNA replication. Cdc2p must be inactivated to permit exit from mitosis, l ...

2008

Mid1p/anillin and the septation initiation network orchestrate contractile ring assembly for cytokinesis

Viesturs Simanis

In both animal cells and fungi, cytokinesis proceeds via a contractile actomyosin ring (CAR). Many CAR components and regulators are evolutionarily conserved. In Schizosaccharomyces pombe, the spatial cue for cytokinesis is provided by Mid1p/Anillin, where ...

2008

S. pombe FEAR protein orthologs are not required for release of Clp1/Flp1 phosphatase from the nucleolus during mitosis

Viesturs Simanis

Cdc14 family phosphatases are highly conserved regulators of cell-cycle progression. Two of the best studied members of this family are budding yeast Cdc14p and its fission yeast homolog Clp1p/Flp1p. The function of both Saccharomyces cerevisiae Cdc14p and ...

2006

Noninvasive characterization of the fission yeast cell cycle by monitoring dry mass with digital holographic microscopy

Pierre Magistretti, Pierre Marquet, Christian Depeursinge, Jonas Kühn, Tristan Colomb, Benjamin Rappaz, Viesturs Simanis

Digital holography microscopy (DHM) is an optical technique which provides phase images yielding quantitative information about cell structure and cellular dynamics. Furthermore, the quantitative phase images allow the derivation of other parameters, inclu ...

SPIE Society of Photo-optical Instrumentation Engineers2009

Optimization of the analogue-sensitive Cdc2/Cdk1 mutant by in vivo selection eliminates physiological limitations to its use in cell cycle analysis

Viesturs Simanis

Analogue-sensitive (as) mutants of kinases are widely used to selectively inhibit a single kinase with few off-target effects. The analogue-sensitive mutant cdc2-as of fission yeast (Schizosaccharomyces pombe) is a powerful tool to study the cell cycle, bu ...

Royal Society, The2014

Analysis of Pneumocystis carinii gene function by complementation in yeast mutants

Viesturs Simanis

2006

An overview of the fission yeast septation initiation network (SIN)

Viesturs Simanis, Andrea Krapp

The fission yeast septation initiation network, or SIN, is a signal transduction network that is required for septum formation in Schizosaccharomyces pombe. Its activity is tightly regulated through the cell cycle, to ensure proper co-ordination of mitosis ...

2008

Events at the end of mitosis in the budding and fission yeasts

Viesturs Simanis

The mitotic exit network (MEN) and the septation initiation network (SIN) control events at the end of mitosis in S. cerevisiae and S. pombe, respectively. SIN initiates contraction of the actin ring and synthesis of the division septum, thereby bringing a ...

2003

Peroxiredoxin 1 Protects Telomeres from Oxidative Damage and Preserves Telomeric DNA for Extension by Telomerase

Joachim Lingner, Viesturs Simanis, Wareed Ahmed, Sophie Redon, Eric Aeby

Oxidative damage of telomeres can promote cancer, cardiac failure, and muscular dystrophy. Specific mechanisms protecting telomeres from oxidative damage have not been described. We analyzed telomeric chromatin composition during the cell cycle and show th ...

Elsevier2016

Cytokinesis: Closure resets your SIN

Viesturs Simanis, Andrea Krapp, Evelyn Lattmann

A new study of fission yeast cell division has revealed a coupling between cytoplasmic partitioning and the turning-off of cytokinesis signalling that may be mediated by asymmetric protein distribution. ...

2009

Mitotic hyperphosphorylation of the fission yeast SIN scaffold protein cdc11p is regulated by the protein kinase cdc7p

Viesturs Simanis, Andrea Krapp

The fission yeast septation initiation network (SIN) triggers the onset of septum formation and cytokinesis. SIN proteins signal from the spindle pole body (SPB), to which they bind in a cell cycle-dependent manner, via the scaffold proteins sid4p and cdc1 ...

2003

A role for the carbon source of the cell and protein kinase A in regulating the S. pombe septation initiation network

Viesturs Simanis, Andrea Krapp, Bastien Mangeat, Özge Uysal Özdemir

The septation initiation network (SIN) is a conserved signal transduction network, which is important for cytokinesis in Schizosaccharomyces pombe. The SIN component Etd1p is required for association of some SIN proteins with the spindle pole body (SPB) du ...

2024

Dma1-dependent degradation of SIN proteins during meiosis in Schizosaccharomyces pombe

Viesturs Simanis, Andrea Krapp

The Schizosaccharomyces pombe septation initiation network (SIN) is required for cytokinesis during vegetative growth and for spore formation during meiosis. Regulation of the SIN during mitosis has been studied extensively, but less is known about its mei ...

Company of Biologists2014