IclR transcription factor family

Graciela Lorca

Graciela is a postdoctoral fellow in the IclR group. She is focusing on the in vivo response of the IclR group of transcriptional regulators to small molecules.

She received her PhD in Genetics from the University of Tucuman, Argentina in 2001. Her thesis was “Survival strategies to stress conditions in Lactobacillus acidophilus”. Her previous position was posdoctoral fellow at the University of California San Diego (UCSD)

email: g_lorca@yahoo.com
phone: 416-946-0074

Selected publications
1. Gonzalez, C.F., Stonestrom, A., Lorca., G.L. and Saier Jr., M.H. (2004). "Biochemical characterization of phosphoryl transfer involving Hpr of the phosphoenolpyruvate-dependent phosphotransferase system in Treponema denticola, an organism lacks PTS permeases." Biochemistry in Press
2. Lorca, G., B. Winnen, and M. Saier. 2003. "Identification of the L-aspartate transporter in Bacillus subtilis." Journal of Bacteriology 185:3218-3222.
3. Taranto M.P., M. L. Fernandez Murga, G. Lorca, G. F. de Valdez. 2003. "Bile salts and cholesterol induce changes in the lipid cell membrane of Lactobacillus reuteri." Journal of Applied Microbiology 95: 86-91.
4. Rollan, G., G. L. Lorca, and G. Font de Valdez. 2003. "Arginine catabolism and acid tolerance response in Lactobacillus reuteri isolated from sourdough." Food Microbiology 20:313-319.
5. Kruszewska D., J. Lan, G. Lorca, N. Yanagisawa , I. Marklinder and Å. Ljungh. 2002. "Selection of lactic acid bacteria as probiotic strains by in vitro tests." Microecology and Therapy 29:37-49.
6. Lorca, G. L., G. Font de Valdez, and Å. Ljungh. 2002. "Characterization of the protein-synthesis dependent adaptive acid tolerance response in Lactobacillus acidophilus." Journal of Molecular Microbiology and Biotechnology 4:525-532.
7. Lorca, G. L., M. I. Torino, G. Font de Valdez, and Å. Ljungh. 2002. "Lactobacilli express cell surface proteins which mediate binding of immobilized collagen and fibronectin." FEMS Microbiology Letters 206: 31-37.
8. Lorca, G. L., T. Wädstrom, G. Font de Valdez, and Å. Ljungh. 2001. "Lactobacillus acidophilus autolysins inhibit Helicobacter pylori In vitro." Current Microbiology 42:39-44.
9. Lorca, G. L., and G. Font de Valdez. 2001. "Acid tolerance mediated by membrane ATPases in Lactobacillus acidophilus." Biotechnology Letters 23:777-780.
10. Lorca, G. L., and G. Font de Valdez. 2001. "A-low-pH-inducible stationary-phase acid tolerance response in Lactobacillus acidophilus CRL 639." Current Microbiology 42:21-25.
11. Lorca, G. L. and G. Font de Valdez. 1999. "Effect of suboptimal growth temperature and growth phase on resistance of Lactobacillus acidophilus to environmental stress." Cryobiology 39:144-149
12. Font de Valdez, G. M., G. Lorca, and M. P. Taranto. 1999. "Conductimetric method for evaluating inhibition of Listeria monocytogenes. Food Microbiology Protocols." Series Methods in Biotechnology. Humana Press Inc.
13. Lorca, G. L., R. R. Raya, M. P. Taranto, and G. F. de Valdez. 1998. "Adaptative acid tolerance response in Lactobacillus acidophilus." Biotechnology Letters 20 (3):239-241.
14. Lorca, G. L. and G. F. de Valdez. 1998. "Temperature adaptation and cryotolerance in Lactobacillus acidophilus." Biotechnology Letters 20 (9): 847-849.
15. Font de Valdez, G., G. Martos, M. P. Taranto, G. L. Lorca, G. Oliver, and A. P. de Ruiz Holgado. 1997. "Influence of bile on Lactobacillus reuteri subjected to freeze-drying." Journal of Dairy Science 80:1955-1958.

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