GSBS Student Publications
GSBS Program
Interdisciplinary Graduate Program
Publication Date
2013-03-05
UMMS Affiliation
Department of Microbiology and Physiological Systems; Program in Cell Dynamics
Document Type
Article
Disciplines
Biochemistry | Cell Biology | Cellular and Molecular Physiology | Molecular Biology
Abstract
Although the sterile 20 (Ste20) serine/threonine protein kinase was originally identified as a component of the S. cerevisiae mating pathway, it has homologs in higher eukaryotes and is part of a larger family of Ste20-like kinases. Ste20-like kinases are involved in multiple cellular processes, such as cell growth, morphogenesis, apoptosis and immune response. Carrying out such a diverse array of biological functions requires numerous regulatory inputs and outputs in the form of protein-protein interactions and post-translational modifications. Hence, a thorough knowledge of Ste20-like kinase binding partners and phosphorylation sites will be essential for understanding the various roles of these kinases. Our recent study revealed that Schizosaccharomyces pombe Nak1 (a conserved member of the GC-kinase sub-family of Ste20-like kinases) is in a complex with the leucine-rich repeat-containing protein Sog2. Here, we show a novel and unexpected interaction between the Nak1-Sog2 kinase complex and Casein kinase 2 (Cka1, Ckb1 and Ckb2) using tandem-affinity purification followed by mass spectrometric analysis. In addition, we identify unique phosphosites on Nak1, Sog2 and the catalytic subunit of casein kinase 2, Cka1. Given the conserved nature of these kinases, we expect this work will shed light on the functions of these proteins both in yeast and higher eukaryotes.
Keywords
Ste20 kinase, casein kinase 2, fission yeast, polar growth
Rights and Permissions
This is an open-access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may be redistributed, reproduced, and reused for non-commercial purposes, provided the original source is properly cited.
DOI of Published Version
10.4161/cc.24095
Source
Cipak L, Gupta S, Rajovic I, Jin QW, Anrather D, Ammerer G, McCollum D, Gregan J. Crosstalk between casein kinase II and Ste20-related kinase Nak1. Cell Cycle. 2013 Mar 15;12(6):884-8. doi: 10.4161/cc.24095. Link to article on publisher's site
Journal/Book/Conference Title
Cell cycle (Georgetown, Tex.)
Related Resources
PubMed ID
23462181
Repository Citation
Cipak, Lubos; Gupta, Sneha; Rajovic, Iva; Jin, Quan-Wen; Anrather, Dorothea; Ammerer, Gustav; McCollum, Dannel; and Gregan, Juraj, "Crosstalk between casein kinase II and Ste20-related kinase Nak1" (2013). GSBS Student Publications. 1850.
https://escholarship.umassmed.edu/gsbs_sp/1850
Included in
Biochemistry Commons, Cell Biology Commons, Cellular and Molecular Physiology Commons, Molecular Biology Commons