Kiley was elected for distinguished contributions to the field of microbial gene regulation, particularly for understanding the role of iron-sulfur and iron proteins in oxygen-dependent gene regulation.
While oxygen can be life-sustaining, molecules that contain unstable oxygen atoms can wreak havoc in a cell by damaging essential biomolecules. To control oxygen reactivity, cells must have a way to respond to it, such as through sensing or stabilizing mechanisms.
Since joining the UW–Madison faculty in 1990, Kiley has led a productive interdisciplinary research program to examine the mechanisms of how cells sense oxygen and iron and their effects on what genes are expressed in a cell. Her lab pioneered the combination of biochemical, genomic, genetic, and spectroscopic approaches to establish a regulatory role for iron and iron-sulfur proteins in controlling the transcription of genes in response to changes in oxygen.
The approaches and concepts they developed have provided important insights into how oxygen availability generally impacts organisms. Her group has also used this knowledge to learn how bacteria like Escherichia coli are able to survive in very low-oxygen environments like the gut. The work has implications for bacterial disease control and manipulation of pathways that are normally inactivated by oxygen.
New fellows will be formally announced in the journal Science on Nov. 27, 2020. On Feb. 13, 2021, they will be inducted during a virtual Fellows Forum ceremony.