Crosby, Heidi

Heidi Crosby

Postdoctoral Research Fellow
Address: 540 EMRB
Phone: (319) 335-7996
Email: heidi-crosby@uiowa.edu

Mentor: Alexander Horswill, PhD

Undergraduate Institution: University of Maine

PhD Institution: University of Wisconsin

Research Description


H.A. Crosby, K.C. Rank, I. Rayment, J.C. Escalante-Semerena (2012). Structural insights into the substrate specificity of the Rhodopseudomonas palustris protein acetyltransferase RpPat: identification of a loop critical for recognition by RpPat. J. Biol. Chem. 287, 41392-41404.

H.A. Crosby*, K.C. Rank*, I. Rayment, J.C. Escalante-Semerena (2012). Structure-guided expansion of the substrate range of methylmalonyl-CoA synthetase (MatB) of Rhodopseudomonas palustris. Appl. Environ. Microbiol. 78, 6619-6629. *These authors contributed equally.

H.A. Crosby, D.A. Pelletier, G.B. Hurst, J.C. Escalante-Semerena (2012). System-wide studies of N-lysine acetylation in Rhodopseudomonas palustris reveals substrate specificity of protein acetyltransferases. J. Biol. Chem. 287, 15590-15601.

C.H. Chan, J. Garrity, H.A. Crosby, J.C. Escalante-Semerena (2011). In Salmonella enterica, the sirtuin-dependent protein acylation/deacylation system maintains energy homeostasis during growth on low concentrations of acetate. Mol. Microbiol. 80, 168-183.

H.A. Crosby, E.K. Heiniger, C.S. Harwood, J.C. Escalante-Semerena (2010). Reversible Nε-lysine acetylation regulates the activity of acyl-CoA synthetases involved in anaerobic benzoate catabolism in Rhodopseudomonas palustris. Mol. Microbiol. 76, 874-888.

A. Kappler, C.M. Johnson, H.A. Crosby, B.L. Beard, D.K. Newman (2010). Evidence for equilibrium iron isotope fractionation by nitrate-reducing iron(II)-oxidizing bacteria. Geochim. Cosmochim. Acta. 74, 2826-2842.

E.A. Felnagle, M.R. Rondon, A.D. Berti, H.A. Crosby, M.G. Thomas (2007). Identification of the biosynthetic gene cluster and an additional gene for resistance to the antituberculosis drug capreomycin. Appl. Environ. Microbiol. 73, 4162-4170.

H.A. Crosby, E.E. Roden, C.M. Johnson, B.L. Beard (2007). The mechanisms of Fe isotope fractionation produced during dissimilatory Fe(III) reduction by S. putrefaciens and G. sulfurreducens. Geobiology 5, 169-189.

H.A. Crosby, C.M. Johnson, E.E. Roden, B.L. Beard (2005). Coupled Fe(II)-Fe(III) and atom exchange as a mechanism for Fe isotope fractionation during dissimilatory iron oxide reduction. Environ. Sci. & Technol. 39, 6698-6704.

G.M. King, H.A. Crosby (2002). Impacts of plant roots on soil CO cycling and soil-atmosphere CO exchange. Global Change Biol. 8:1085-1093.


  • University of Wisconsin-Madison Dept of Bacteriology Chair's Award, 2012
  • Ira L. Baldwin Predoctoral Fellowship, University of Wisconsin-Madison Dept of Bacteriology, 2011
  • NIH Biotechnology Training Grant, 2007-2011
  • NSF Graduate Research Fellowship, 2004-2007