Abstract：
:Protein kinase signaling along the kinetochore-centromere axis is crucial to assure mitotic fidelity, yet the details of its spatial coordination are obscure. Here, we examined how pools of human Polo-like kinase 1 (Plk1) within this axis control signaling events to elicit mitotic functions. To do this, we restricted active Plk1 to discrete subcompartments within the kinetochore-centromere axis using chemical genetics and decoded functional and phosphoproteomic signatures of each. We observe distinct phosphoproteomic and functional roles, suggesting that Plk1 exists and functions in discrete pools along this axis. Deep within the centromere, Plk1 operates to assure proper chromosome alignment and segregation. Thus, Plk1 at the kinetochore is a conglomerate of an observable bulk pool coupled with additional functional pools below the threshold of microscopic detection or resolution. Although complex, this multiplicity of locales provides an opportunity to decouple functional and phosphoproteomic signatures for a comprehensive understanding of Plk1's kinetochore functions.
journal_name
Nat Chem Bioljournal_title
Nature chemical biologyauthors
Lera RF,Potts GK,Suzuki A,Johnson JM,Salmon ED,Coon JJ,Burkard MEdoi
10.1038/nchembio.2060subject
Has Abstractpub_date
2016-06-01 00:00:00pages
411-8issue
6eissn
1552-4450issn
1552-4469pii
nchembio.2060journal_volume
12pub_type
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更新日期：2009-12-01 00:00:00
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更新日期：2009-08-01 00:00:00
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更新日期：2016-06-01 00:00:00
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更新日期：2018-11-01 00:00:00
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