Department ofBiology


Craig M. Stephens

Professor, Biology Department and Public Health Program


B.S. in Biology, Roanoke College

Ph.D in Molecular Biology, University of Virginia

Postdoctoral research - Laboratory of Dr. Lucy Shapiro, Developmental Biology, Stanford University

Research Interests

My current research is focused on genomic analysis of the acquisition, regulation, and evolution of antibiotic resistance in commensal and pathogenic E. coli, a common gut bacterium in humans. Antibiotic resistance is a growing public health problem, and understanding how potential pathogens acquire resistance is of biological, epidemiological, and medical significance.   During the 2014-15 academic year I will be on sabbatical leave working in the laboratory of Dr. Lee Riley, Division of Infectious Diseases, UC Berkeley School of Public Health.


Recent Courses Taught at SCU

BIOL 113       Microbiology (with lab)

BIOL 135       Biofuels: Sustainable Energy for the Future?

BIOL 176       Recombinant DNA Technology (with lab)

PHSC 1         Human Health and Disease

PHSC 120     Technology, Innovation, and Public Health


* indicates SCU student, technician, or post-doc

C. Stephens, J. Skerker, M. Sekhon, A. Arkin, and L. Riley (2015). Complete genome sequences of four Escherichia coli ST95 isolates from bloodstream infections. Genome Announcements 3(6):e01241-15  (open access)

C. Stephens, P. Cho, V. de Araujo, I. Gomes, S. de Azevedo Sias, C. Cardoso, L. Riley, F. Aguiar-Alves (2015). Draft sequence of a community-associated methicillin-resistant PVL+ Staphylococcus aureus ST30 isolate from a pediatric lung infection in Brazil. Genome Announcements3(4):e00907-15 (open access)

M. Garrett*, J. Parker*, and C. Stephens (2014). Draft genome sequences of antibiotic-resistant commensal Escherichia coli. Genome Announcements 2(6): 1-2. (open access)

K. Ash, T. Brown, T. Watford, L. Scott, C. Stephens, and B. Ely (2014). A comparison of the Caulobacter NA1000 and K31 genomes reveals extensive genome rearrangements and differences in metabolic potential. Open Biology 4: 140128. (open access)

A. Sheikh*, D. Caswell*, C. Dick*, S. Gang*, J. Jarrell*, A. Kohli*, A. Lieu*, J. Lumpe*, M. Garrett*, J. Parker* and C. Stephens (2013). Regulation of D-galacturonate metabolism in Caulobacter crescentus by HumR, a LacI-family transcriptional repressor. Advances in Bioscience and Biotechnology, 4(10B): 63-74. (open access)

C. Stephens, B. Christen, K. Watanabe*, T. Fuchs, and U. Jenal. (2008) Regulation of D-xylose metabolism in Caulobacter crescentus by a LacI-type repressor. Journal of Bacteriology 189: 8828-8834.

C. Stephens, B. Christen, T. Fuchs, V. Sundaram*, K. Watanabe*, and U. Jenal. (2007) Genetic analysis of a novel pathway for D-xylose metabolism in Caulobacter crescentus. Journal of Bacteriology 89:2181-2185.

A. Hottes, M. Meewan, D. Yang*, N. Arana*, P. Romero, H. McAdams, C. Stephens (2003). Transcriptional profiling of Caulobacter crescentus during growth on complex and minimal media. Journal of Bacteriology 186: 1448-1461.

L. West*, D. Yang*, and C. Stephens (2002). Use of the Caulobacter crescentus genome sequence to develop a method for systematic genetic mapping. Journal of Bacteriology 184: 2155-2166.