Errett Hobbs

Contact information

Lawrence Livermore National Laboratory
7000 East Avenue, L-179
Livermore, CA 94550
phone: 925 422 6576
fax: 925 423 6435



National Institutes of Health—Postdoctoral Fellow, Microbiology (2011)
Harvard University—Ph.D., Microbiology (2006)
Michigan State University—B.S., Biochemistry/Biotechnology (2001)
Michigan State University— B.S., Human Physiology (2001)


I have employed a variety of genetic and biochemical approaches to delineate the functions of small proteins (≤ 50 amino acids) that are involved in gene regulation or antibiotic resistance in Escherichia coli and Bacillus subtilis


E.C. Hobbs, X. Yin, B.J. Paul, J.L. Astarita, and G. Storz, “Conserved Small Protein Associates with the Multidrug Efflux Pump AcrB and Differentially Affects Antibiotic Resistance,” Proceedings of the National Academy of Sciences, October 2012, Vol. 109, No. 41, pp. 16696–16701

E.C. Hobbs and G. Storz, “Competition Assays Using Barcoded Deletion Strains to Gain Insight into Small RNA Function,” Methods in Molecular Biology, 2012, Vol. 905, pp. 63–72

A.V. Banse, E.C. Hobbs, and R. Losick, “Phosphorylation of Spo0A by the Histidine Kinase KinD Requires the Lipoprotein Med in Bacillus subtilis,” Journal of Bacteriology, August 2011, Vol. 193, No. 15, pp. 3949–3955

E.C. Hobbs, F. Fontaine, X. Yin, and G. Storz, “An Expanding Universe of Small Proteins,” Current Opinion in Microbiology, April 2011, Vol. 14, No. 2, pp. 167–173

E.C. Hobbs, J.L. Astarita, and G. Storz, “Small RNAs and Small Proteins Involved in Resistance to Cell Envelope Stress and Acid Shock in Escherichia coli: Analysis of a Bar-Coded Mutant Collection,” Journal of Bacteriology, January 2010, Vol. 192, No. 1, pp. 59–67

A.V. Banse, A. Chastanet, L. Rahn-Lee, E.C. Hobbs, and R. Losick, “Parallel Pathways of Repression and Antirepression Governing the Transition to Stationary Phase in Bacillus subtilis,” Proceedings of the National Academy of Sciences, October 2008, Vol. 105, No. 40, pp. 15547–15552

C.D. Ellermeier, E.C. Hobbs, J.E. González-Pastor, and R. Losick, “A Three-Protein Signaling Pathway Governing Immunity to a Bacterial Cannibalism Toxin,” Cell, February 2006, Vol. 124, No. 3, pp. 549–559

S.R. Hootman, E.C. Hobbs, and D.B. Luckie, “Direct Measurement of Acid Efflux from Isolated Guinea Pig Pancreatic Ducts,” Pancreas, May 2005, Vol. 30, No. 4, pp. 363–368

J.E. González-Pastor, E.C. Hobbs, and R. Losick, “Cannibalism by Sporulating Bacteria,” Science, July 2003, Vol. 301, No. 5632, pp. 510–513

D.B. Luckie, J.H. Wilterding, J.J. Maleszewski, E.C. Hobbs, and L.K. Olson, “Extracellular Acidification Parallels Insulin Secretion in INS-1 and HIT-T15 β-Cell Lines,” Biochemical and Biophysical Research Communications, May 2002, Vol. 293, No. 4, pp. 1168–1173