Jeff Dahlseid ’90

Alumni and Faculty

Associate Professor in Biology and Chemistry

I am interested in engaging students in my quest to understand how the expression of genes is regulated by cell-mediated changes, specifically changes involving the stability and translation of messenger RNA (mRNA). I have several potential projects based in a wonderful model system (that also makes the lab smell pretty good!). Using bakers' yeast, the lab can employ easily accessible molecular and genetic approaches to understand the cellular biochemistry of specialized mRNA degradation pathway, the so-called nonsense-mediated mRNA decay (NMD). NMD is part of the natural repertoire for regulating gene expression, based on the recent demonstration that 6-9% of the wild-type mRNAs in yeast accumulate when NMD is inactivated1.

We have identified several mRNAs affected by NMD that are interesting because they encode proteins, which affect chromosome function at either the centromere or telomere2,3. Available projects include; 1) using decay rate measurements accomplished by quantitative methods for analyzing mRNA abundance (Northern blot) to investigate the mechanism of the NMD effect upon substrate mRNAs and 2) using genetics and Northern blot measurements to identify substrate mRNAs. In addition, a third project exists that involves using enzymatic assays and growth tests to investigate the affects upon translation of mutations in protein required NMD.

1 Lelivelt, M.J. and M.R. Culbertson (1999) Mol. Cell. Biol. 19: 6710-6719.
2 Dahlseid, J.N., Puziss, J., Shirley, R.L., Atkin, A.L., Hieter, P. and Culbertson, M.R. 1998. Genetics 150: 1019-1035.
3 Dahlseid, J.N., Lew-Smith, J.E., Lelivelt, M.J., Enomoto, S., Ford, A., Desruisseaux, M., McClellen, M., Lue, N.,Culbertson, M.R., Berman, J. 2003. Eukaryotic Cell 2: 134-142.

With Prior Project Support from the National Science Foundation

This material is based upon work supported by the National Science Foundation under Grant Nos. 0091300 and 0326029. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.


B.A., Gustavus Adolphus College; Ph.D., Northwestern University

Courses Taught


BIO-101 (Principles Lab), BIO-201 (Cell and Molecular Biology), BIO-201 (Cell Biology Lab), BIO-392 (Biology Research), and CHE-255 (Biochemistry Lab)

Synonym Title Times Taught Terms Taught
CHE-255Biochemistry Lab172015/FA, 2014/FA, 2012/FA, 2009/SP, 2008/FA, 2008/SP, 2007/FA, 2007/SP, 2006/SP, 2005/FA, 2003/FA, and 2002/FA
CHE-360Proteins Lab132016/SP, 2015/SP, 2013/SP, 2009/FA, 2006/SP, 2005/SP, 2004/SP, and 2003/SP
BIO-392Biology Research132015/FA, 2012/FA, 2012/SP, 2011/SP, 2006/JN, 2005/FA, 2005/SP, 2005/JN, 2004/FA, 2004/SU, 2004/SP, 2004/JN, and 2003/FA
CHE-360Proteins102016/SP, 2015/SP, 2013/SP, 2009/FA, 2006/SP, 2005/SP, 2004/SP, and 2003/SP
CHE-255Biochemistry72010/FA, 2009/SP, 2008/SP, 2005/FA, 2004/FA, 2003/FA, and 2002/FA
BIO-201Cell Biology Lab62015/FA, 2012/FA, 2008/FA, 2007/FA, 2005/FA, and 2003/FA
BIO-201Cell and Molecular Biology42015/FA, 2014/FA, 2008/FA, and 2007/FA
BIO-128Biomolecular Research32012/JN, 2011/JN, and 2009/JN
BIO-101Principles Lab22015/FA and 2014/FA
CHE-399Chemistry Seminar22006/SP and 2005/FA
BIO-397Honors Thesis12013/SP
NDL-207Mentoring Community12006/JN
CHE-268Career Exploration12003/JN