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BRAHAMSHA, BIANCA

Research Microbiologist

Senior Lecturer

Degrees:

• B.A., Goucher College
• Ph.D., Cornell University, New York

Research Interests:

• Molecular biology and physiology of cyanobacteria
• Bacterial motility and chemotaxis
• Bacterial diversity

Courses Recently Taught:

• BIMM127: Marine Microbiology Lab
• SIO 296: Special Topics/Marine Biology

Honors and Awards:

• Mellon Foundation Fellowship from Scripps Institution of Oceanography, 1992
• Postdoctoral Fellowship from the American Cancer Society, 1988-1991
• Summer Graduate Assistanship, Graduate School, Cornell University, Summer, 1986
• Calvin Prize for History, Goucher College, 1979
• Gairdner B. Moment Award for the Biological Sciences, Goucher College, 1979

Mentoring:

• Johnson, Todd (Graduate; 2007-)
• McCarren, Jay (Graduate; 1999-2005)

Greenberg, E. P., B. Brahamsha, and K. Fosnaugh. 1985. The motile behaviour of Spirochaeta aurantia: A twist to chemosensory transduction in bacteria. p. 107-118. Sensing and Response in Microorganisms. (M. Eisenbach and B. Balban, ed. ) Elsevier.

Brahamsha, B. and E. P. Greenberg. 1987. Complementation of a trpE deletion in Escherichia coli by Spirochaeta aurantia DNA encoding anthranilate synthetase component I activity. J. Bacteriol. 169:3764-3769.

Brahamsha, B. and E. P. Greenberg. 1988. A biochemical and cytological analysis of the complex periplasmic flagella from Spirochaeta aurantia. J. Bacteriol. 170:4023-4032.

Brahamsha, B. and E. P. Greenberg. 1989. Cloning and sequence analysis of flaA, a gene encoding a Spirochaeta aurantia flagellar filament surface antigen. J. Bacteriol. 171:1692-1697.

Brahamsha, B., C.-Y. Han, I. P. Crawford, and E. P. Greenberg. 1991. Nucleotide sequence and analysis of a gene encoding anthranilate synthase component I in Spirochaeta aurantia. J. Bacteriol. 173:541-548.

Brahamsha, B. and R. Haselkorn. 1991. Isolation and characterization of the gene encoding the principal sigma factor of the vegetative cell RNA polymerase from the cyanobacterium Anabaena sp. strain PCC 7120. J. Bacteriol. 173:2442-2450.

Brahamsha, B. and R. Haselkorn. 1992. Identification of multiple RNA polymerase sigma factor homologs in the cyanobacterium Anabaena sp. strain PCC 7120: cloning, expression , and inactivation of the sigB and sigC genes. J. Bacteriol. 174: 7273-7282.

Brahamsha, B. 1996 A genetic manipulation system for oceanic cyanobacteria of the genus Synechococcus. Appl. Env. Microbiol. 62: 1747-1751,

Brahamsha, B. 1996. An abundant cell-surface polypeptide is required for swimming by the non-flagellated marine cyanobacterium Synechococcus. Proc. Natl. Acad. Sci. USA. 93:6504-6509.

Campbell, E. L., B. Brahamsha, and J. Meeks. 1998. Mutation of an alternative sigma factor in the cyanobacterium Nostoc punctiforme results in increased infection of its symbiotic plant partner Anthoceros punctatus. J. Bacteriol. 180:4938-4941.

Collier, J.L., B. Brahamsha, and B. Palenik. 1999. The marine cyanobacterium Synechococcus sp. WH7805 requires urease (urea amidohydrolase, EC 3.5.1.5) to utilize urea as a nitrogen source: molecular-genetic and biochemical analysis of the enzyme. Microbiology-UK. 145:447-459.

Brahamsha, B. Genetic manipulations in Synechococcus spp. Of Marine Cluster A. In Marine Cyanobacteria, Charpy, L. and Larkum, AWD. (eds), Bulletin de l'Institut Océanographique, Monaco, 1999.

Brahamsha, B. 1999. Non-flagellar swimming in marine Synechococcus. J. Mol. Microbiol. Biotechnol. 1:59-62.

Toledo, G., B. Palenik, and B. Brahamsha. 1999. Swimming strains of marine Synechococcus with widely different photosynthetic pigment ratios form a monophyletic group. Appl. Environ. Microbiol. 65:5247-5251.

Brahamsha, B. Non-flagellar swimming in marine Synechococcus. In Molecular Marine Microbiology, (D. Bartlett ed.), Horizon Scientific Press, Norfolk (UK), 2000.

Palenik, B., B. Brahamsha, F. Larimer, M. Land, L. Hauser, P. Chain, J. Lamerdin, W. Regala, E. A. Allen, J. McCarren, I. Paulsen, A. Dufresne, F. Partensky, E. Webb, J. Waterbury. 2003. The genome of a motile marine Synechococcus. Nature. 424:1037-1042.

Six, C., J. C. Thomas, B. Brahamsha, Y. Lemoine, F. Partensky. 2004. Photophysiology of the marine cyanobacterium Synechococcus sp. WH8102, a new model organism. Aquat. Microbial Ecol. 35:17-29.

McCarren, J., J. Heuser, R. Roth, N. Yamada, M. Martone, and B. Brahamsha. 2005. Inactivation of swmA results in the loss of an outer cell layer in a swimming Synechococcus strain. J. Bacteriol. 187:224-230.

McCarren, J. and B. Brahamsha. 2005. Transposon mutagenesis in a marine Synechococcus: isolation of swimming motility mutants. J. Bacteriol. 187:4457-4462.

McCarren, J. and B. Brahamsha. 2007. SwmB: a 1.12 MDa protein that is required for non-flagellar swimming motility in Synechococcus. J. Bacteriol. 189:1158-1162.

Thomas, E. V., B. Brahamsha, D. M. Haaland, K. H. Kang, B. Palenik, I. T.Paulsen, and J. A. Timlin. Robust statistical analysis of microarray data with replicated spots: a case study with Synechococcus WH8102. 2009. Comparative and Functional Genomics.

McCarren, J. and B. Brahamsha. Swimming motility mutants of marine Synechococcus affected in production and localization of the S-layer protein SwmA. 2009. J.Bacteriol. 191:1111-1114.

Johnson, T., B. Palenik, and B. Brahamsha. 2011. Characterization of a functional vanadium-dependent bromoperoxidase in the marine cyanobacterium Synechococcus sp. CC9311. In Press. J. Phycol. 47:

Apple, J., S. S. Strom., B. Palenik, and B. Brahamsha. 2011. Variability in protist grazing and growth on different marine Synechococcus isolates. Appl. Environ. Microbiol. 77:3074-3089.

Strom, S.S., B. Brahamsha, K. A. Fredrickson, J. K. Apple, A. Gutierrez-Rodriguez. 2011. A giant cell surface protein in Synechococcus WH8102 inhibits feeding by a dinoflagellate predator. Environ. Microbiol. In Press.