Interrogating the DNA of Arsenate-Grown GFAJ-1 Cells: Tools, Techniques, and Data

Presenter: Marshall Reaves, Princeton University
When: October 30, 2012 3PM PDT

A strain of Halomonas bacteria, GFAJ-1, has been claimed to specifically incorporate arsenic into its DNA in place of phosphorus. However, two groups using complementary methods concluded that GFAJ-1 DNA contains no covalently bound arsenate. The techniques applied are broadly applicable to novel or non-canonical organisms and thus especially suited for any astrobiologist’s toolkit.

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