Abstract:
:Nek2 is a mammalian protein kinase that is structurally homologous to NIMA, a mitotic regulator in Aspergillus nidulans. To understand the possible cellular processes in which Nek2 participates during the cell cycle, we investigated the expression and subcellular localization of Nek2 in mitotic cells. The Nek2 protein levels were observed to be regulated in a cell cycle stage-specific manner in cultured cells. The cell cycle stage specificity of Nek2 expression was also confirmed in cells undergoing mitosis in vivo. Nek2 proteins were localized in both the nucleus and cytoplasm throughout the cell cycle, but exhibited dynamic changes in distribution, depending on the cell cycle stage. Nek2 was associated with chromosomes from prophase to metaphase and then was dissociated upon entering into anaphase. Nek2 then appeared at the midbody of the cytoplasmic bridge at telophase. Nek2 was also associated with the centrosome throughout the cell cycle as observed previously by others. Additionally, the nuclear localization of Nek2 was increased during S phase. Such dynamic behavior of Nek2 suggests that Nek2 may be a mitotic regulator that is involved in diverse cell cycle events.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Ha Kim Y,Yeol Choi J,Jeong Y,Wolgemuth DJ,Rhee Kdoi
10.1006/bbrc.2001.6212subject
Has Abstractpub_date
2002-01-18 00:00:00pages
730-6issue
2eissn
0006-291Xissn
1090-2104pii
S0006291X01962126journal_volume
290pub_type
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