Judy St. John
Research Scientist, ASRC Management Services Contracted to: U.S. Geological Survey
E-mail: jstjohn@du.edu
Tel. 303.871.3535
Education
Ph.D. Biology, University of Denver, 2007
M.S. Biomedical Science, Hood College, 1990.
B.A. Biology, University of Colorado, Denver, 1984.
Research Interests
My research focuses on the development and optimization of molecular genetic techniques to generate data for wildlife management and conservation efforts. This includes techniques that allow for non-invasive sampling of individuals such as the use of hair, feathers, and feces. I also work closely with students so that they can be active participants in our ongoing genetic studies.
Additionally, I have been involved in studies involving the transposable elements CR1 (chicken repeat 1). I developed a technique to isolate CR1 insertions so that these CR1 loci can be used for phylogenetic studies in waterfowl. The sequences flanking these CR1s are also being examined to determine insertion site preference, if any.
Patents Held
St John, J. and T.W. Quinn. 2005. Efficient isolation of specific nucleic acid targets. U.S. patent application serial number 10,591,051.
Publications
Judith St John (formerly Strandberg)
St. John, J. and T.W. Quinn. 2008. Rapid Capture of DNA Targets. BioTechniques 44.
St John J., R.F. Kysela, and S.J. Oyler-McCance. 2007. Characterization of microsatellite loci isolated in Mountain Plover (Charadrius montanus). Molecular Ecology Notes 7, 802-804.
St John J., F.A. Ransler, T.W. Quinn, and S.J. Oyler-McCance. 2006. Characterization of microsatellite loci isolated in trumpeter swan (Cygnus buccinator). Molecular Ecology Notes 6:1083-1085.
St. John, J., J. P. Cotter, and T. W. Quinn. 2005. A recent chicken repeat 1 (CR1) retrotransposition confirms the Coscoroba-Cape Barren Goose clade. Molecular Phylogenetics and Evolution 37:83-90.
Oyler-McCance, S. J., J. St. John, S. E. Taylor, and T. W. Quinn. 2005. Population Genetics of Gunnison Sage-Grouse: Implications for Management. Journal of Wildlife Management (in press).
Oyler-McCance, S. J., J. St. John, F. L. Knopf, and T. W. Quinn. 2005. Population Genetic Analysis of Mountain Plover Using Mitochondrial DNA Sequence Data. Condor (in press)
Oyler-McCance, S. J., J. St. John, J. M. Parker, and S. H. Anderson. 2005. Characterization of microsatellite loci isolated in Midget-faded Rattlesnakes (Crotalus viridis concolor). Molecular Ecology Notes (in press).
Cotter, J.P., St John, J., and Quinn, T.W. 2001. Primers to the avian Z-linked growth hormone receptor gene. Conser. Genetics 2, 73-75.
Kahn, N.W., St John, J., and Quinn, T.W. 1998. Chromosome-specific intron size differences in the avian CHD gene provide an efficient method for sex identification in birds. Auk 114, 1074-1078.
Ohara, M., Martin, P.Y., Xu, D.L., St John, J., Pattison, T.A., Kim, J.K., and Schrier, R.W. 1998. Upregulation of aquaporin-2 water channel expression in pregnant rats. J. Clin. Invest. 101, 1076-1083.
Niederberger, M., Gines, P., Martin, P.Y., St John, J., Wojtaszek, P., Xu, D.L., Tsai, P., Nemenoff, R.A., and Schrier, R.W. 1998. Increased renal and vascular cytosolic phospholipase A2 activity in rats with cirrhosis and ascites. Hepatology 27, 42-47.
Martin, P.Y., Ohara, M., Gines, P., Xu, D.L., St John, J., Niederberger, M., and Schrier, R.W. 1998. Nitric oxide synthase (NOS) inhibition for one week improves renal sodium and water excretion in cirrhotic rats with ascites. J. Clin. Invest. 101, 235-242.
Xu, D.L., Martin, P.Y., Ohara, M., St John, J., Pattison, T., Meng, X., Morris, K., Kim, J.K.. and Schrier, R.W. 1997. Upregulation of aquaporin-2 water channel expression in chronic heart failure rat. J. Clin. Invest. 99, 1500-1505.
Xu, D.L., Martin, P.Y., St John, J., Tsai, P., Summer, S.N., Ohara, M., Kim, J.K., and Schrier, R.W. 1996. Upregulation of endothelial and neuronal constitutive nitric oxide synthase in pregnant rats. Am. J. Physiol. 271 (Regulatory Integrative Comp. Physiol. 40 ), R1739-R1745.
Martin, P.Y., Xu, D.L.. Niederberger, M., Weigert, A., Tsai, P., St John, J., Gines, P., and Schrier, R.W. 1996. Upregulation of the endothelial constitutive NOS: A major role in the increased NO production in cirrhotic rats. Am. J. Physiol. 270 (Renal Fluid Electrlye Physiol. 39), F494-F499.
Bigger, C.A.H., St John, J., Yagi, H., Jerina, D.M., and Dipple, A. 1992. Mutagenic specificities of four stereoisomeric benzo © phenanthrene dihydrodiol epoxides. Proc. Natl. Acad. Sci. USA 89, 368-372.
Christensen, K., Estes, P.A., Onate, S.A., Beck, C.A., DeMarzo, A., Altman, M, Lieberman, B.A., St John, J., Nordeen, S.K., and Edwards, D.P. 1991. Characterization and functional properties of the A and B forms of human progesterone receptors in a baculovirus system. Mol. Endo. 5, 1755-1770.
Bigger, C.A.H., Flickinger, D.J., St John, J., Harvey, R.G., and Dipple, A. 1991. Preferential mutagenesis of GC base pairs by the anti 3,4-dihydrodiol 1,2-epoxide of 7-methlybenz (a) anthracene. Mol. Carcinogen. 4, 176-179.
Bigger, C.A.H., Flickinger, D.J., Strandberg, J., Pataki, J., Harvey, R.G., and Dipple, 1990. A. Mutational specificity of the anti 1,2-dihydrodiol 3,4-epoxide of 5-methlychrysene. Carcinogenesis 11, 2263-2265.
Reardon, D.B., Bigger, C.A.H., Strandberg, J., Yagi, H., Jerina, D.M., and Dipple, A. 1989. Sequence selectivity in the reaction of optically active hydrocarbon dihydrodiol epoxides with rat H-ras DNA. Chem. Res. Toxicol. 2, 12-14.
Bigger, C.A.H., Strandberg, J., Yagi, H., Jerina, D.M., and Dipple, A. 1989. Mutational specificity of a potent carcinogen, benzo [c] phenanthrene (4R,3S)-dihydrodiol (2S,1R)-epoxide, which reacts with adenine and quanine in DNA. Proc. Natl. Acad. Sci USA 86, 2291-2295.