June 14, 2017

by

Meet a Microbiologist: Kimberly Walker

Like many young scientists, Kimberly Walker took to her natural surroundings for study. As a child, she would do experiments on ants near her house. After a B.S. in medical technology, she pursued a Ph.D. in microbiology and immunology. She studied the molecular pathogenesis of Gram-negative bacteria, specifically Bordetella pertussis, Proteus mirabilis, and diarrheagenic Escherichia coli.

She is fascinated by the secretion systems of Gram-negative bacteria. Gram-negative bacteria use different forms of secretion to transfer proteins from within the cell to the exterior. Secretion systems have many functions, whether to emit toxins or to build extracellular structures. “They are brilliant. Type II is my favorite,” she says. (more…)