Encyclopedia of Signaling Molecules

2018 Edition
| Editors: Sangdun Choi

Monopolar Spindle 1 (Mps1)

  • Matthew L. H. ChuEmail author
  • Patrick A. Eyers
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-67199-4_576


Historical Background

Mps1 was first identified in the budding yeast Saccharomyces cerevisiae and named for the monopolar spindles that form in the mps1 mutant strain (reviewed in Fisk et al. 2004). These spindles are generated as a result of the absence of spindle pole body (SPB) duplication; mutant yeast cells consequently undergo a “monopolar” mitosis. Four years later, the mps1 gene was shown to encode an essential dual-specificity protein kinase, and a fission yeast homolog, termed Mph1, was also identified in Schizosaccharomyces pombe (Fisk et al. 2004). Library screening with antibodies to phosphotyrosine also identified a human protein kinase termed TTK/PYT, and a mouse kinase termed Esk; these were later recognized as vertebrate Mps1 orthologs. In addition, Xenopus, zebrafish and Drosophila Mps1 orthologs have also been characterized (Fisk et al. 2004)....

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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Department of Structural BiologyStanford University School of MedicineStanfordUSA
  2. 2.YCR Institute for Cancer StudiesUniversity of SheffieldSheffieldUK