Eric L. Weiss
Signaling Pathways in the Control of Cell Architecture
Eukaryotic cells exert remarkable control over their three-dimensional organization. This control of morphogenesis is central to cell division, motility, and differentiation, and requires orchestration of diverse processes. My laboratory is interested in understanding how protein kinase signaling pathways coordinate cytoskeleton organization, membrane traffic, and gene expression to define cell architecture. We are using the budding yeast Saccharomyces cerevisiae to determine the exact physiological functions and relevant phosphorylation targets of highly conserved kinases that control important aspects of cell morphology.
Our present work is concentrated on understanding the functions of p21-activated kinases (PAKs) and the Ndr/warts family kinase Cbk1. The PAKs are important in early bud formation and establishment of the cytokinesis site, and may have undefined functions during late cell division. We are investigating PAK regulation of cytoskeletal proteins important for bud morphogenesis. Cbk1 is required throughout the cell cycle for sustained polarized growth, and may control localization of cell wall modifying machinery. Interestingly, Cbk1 also coordinates the transcription of genes required for mother/daughter separation with exit from mitosis. This function likely involves regulation of the nuclear export of Ace2, a highly conserved transcription factor.
Understanding how any protein kinase relays information requires identification of its regulatory partners and downstream phosphorylation targets. We are taking diverse approaches to this difficult problem. In addition to well-established genetic and biochemical techniques, we are using novel chemical genetic methods for in vivo and in vitro characterization of individual protein kinase functions and targets. This work involves both careful phenotypic analysis and proteome-scale investigation of potential phosphorylation targets.
Cell Morphogenesis Proteins Are Translationally Controlled through UTRs by the Ndr/LATS Target Ssd1. Wanless AG, Lin Y, and Weiss EL. PLoS ONE. 2014 January 21;9(1):e85212.
Cell Cycle Regulated Interaction of a Yeast Hippo Kinase and Its Activator MO25/Hym1. Hsu J and Weiss EL. PLoS ONE. 2013 October 21;8(10):e78334.
Mitotic Exit and Separation of Mother and Daughter Cells. Weiss EL. Genetics. 2012 December 1;192(4):1165-1202.
Nuclear envelope morphology constrains diffusion and promotes asymmetric protein segregation in closed mitosis. Boettcher B, Marquez-Lago TT, Bayer M, Weiss EL, and Barral Y. Journal of Cell Biology. 2012 June 25;197(7):921-937.
TULIPs: tunable, light-controlled interacting protein tags for cell biology. Strickland D, Lin Y, Wagner E, Hope CM, Zayner J, Antoniou C, Sosnick TR, Weiss EL, and Glotzer M. Nature Methods. 2012 April;9(4):379-384.
Proteome-Wide Discovery of Evolutionary Conserved Sequences in Disordered Regions. Nguyen Ba AN, Yeh BJ, van Dyk D, Davidson AR, Andrews BJ, Weiss EL, and Moses AM. Science Signaling. 2012 March 13;5(215):rs1.
High-Throughput Screen for Identifying Small Molecules That Target Fungal Zinc Homeostasis. Simm C, Luan C-H, Weiss E, and O'Halloran T. PLoS ONE. 2011 September 29;6(9):e25136.
Mitotic Exit Control of the Saccharomyces cerevisiae Ndr/LATS Kinase Cbk1 Regulates Daughter Cell Separation after Cytokinesis. Brace J, Hsu J, and Weiss EL. Molecular and Cellular Biology. 2011 February 15;31(4):721-735.
Sequential Counteracting Kinases Restrict an Asymmetric Gene Expression Program to early G1. Mazanka E and Weiss EL. Molecular Biology of the Cell. 2010 August 15;21(16):2809-2820.
Cbk1 Regulation of the RNA-Binding Protein Ssd1 Integrates Cell Fate with Translational Control. Jansen JM, Wanless AG, Seidel CW, and Weiss EL. Current Biology. 2009 December 29;19(24):2114-2120.
The NDR/LATS Family Kinase Cbk1 Directly Controls Transcriptional Asymmetry. Mazanka E, Alexander J, Yeh BJ, Charoenpong P, Lowery DM, Yaffe M, and Weiss EL. PLoS Biology. 2008 August 19;6(8):e203.
Phosphoregulation of Cbk1 is critical for RAM network control of transcription and morphogenesis. Jansen JM, Barry MF, Yoo CK, and Weiss EL. Journal of Cell Biology. 2006 December 4;175(5):755-766.
View all publications by Eric L. Weiss listed in the National Library of Medicine (PubMed). Current and former IBiS students in blue.