Nemat O. Keyhani

Associate Professor

Department of Microbiology and Cell Science University of Florida 
Ph.D. (1993) Johns Hopkins University

Teaching Interest

MCB 4304 Molecular Genetics of Prokaryotes

Description of Research

Molecular mechanisms of fungal pathogenesis, development of molecular sensors.

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Selected Publications

Westwood, G.S., Huang, S.W., and Keyhani, N.O. (2005) Allergens of the entomopathogenic fungus Beauveria bassiana. Clinical and Molecular Allergy 3:1

Kirkland, B.H., Cho, Eun-Min, and Keyhani, N.O. (2004) Differential Susceptibility of Amblyomma maculatum and Amblyomma americanum (Acari:Ixodidea) to the Entomopathogenic Fungi Beauveria bassiana and Metarhizium anisopliae. Biological Control 31:414-421.

Kirkland, B.H., Westwood, G.S., Keyhani, N.O. (2004) Pathogenicity of entomopathogenic fungi Beauveria bassiana and Metharhizium anisopliae to Ixodidae tick species Dermacentor variabilis Rhipicephalus sanguineus, and Ixodes scapularis. J Med Ent 41: 705-711.

Bonner, C.A., Jensen, R.A., Gander, J.E., and Keyhani, N.O. (2004) A core catalytic domain of the TyrA protein family: arogenate dehydrogenase from Synechocytis. Biochem. J. 382:279-291

Xie, G., Bonner, C.A., Keyhani, N.O., and Jensen, R.A. (2004) Phylogenetic evidence for the lateral gene transfer of several whole-pathway and partial-pathway trp operons in Bacteria. BMC Biology 2:15

Xie G, Bonner, C.A., Brettin, T., Gottardo, R., Keyhani, N.O., and Jensen, R.A. (2003) Lateral gene transfer and ancient paralogy of operons containing redundant copies of tryptophan-pathway genes in Xylella species and heterocystous cyanobacteria. Genome Biol.4:R14. 

Xie, G., Keyhani, N.O., Bonner, C.A., and Jensen, R.A. (2003) The Ancient Origin of the Tryptophan Operon and Tracking the Subsequent Dynamics of Evolutionary Change. Mol. Micro. Biol. Rev. 67:303-342.

Keyhani, N.O., Li, X., and Roseman, S.   (2000) Chitin Catabolism in the Marine Bacterium Vibrio furnissii: Identification and Molecular Cloning of a Chitoporin. J. Biol. Chem., 275:  33068-33076.

 Park, J.K., Keyhani, N.O., and Roseman, S. (2000) Chitin Catabolism in the Marine Bacterium Vibrio furnissii: Identification, Molecular Cloning, and Characterization of an N,N’-Diacetylchitobiose phosphorylase. J. Biol. Chem., 275: 33077-33083.

 Keyhani, N.O., Wang, L., Lee, Y.C., and Roseman, S.  (2000)The Chitin Disaccharide, N,N’-Diacetylchitobiose, Is Catabolized by Escherichia coli and Is Transported/Phosphorylated by the Phosphoenolpyruvate:glycose Phosphotransferase System. J. Biol. Chem., 275: 33084-33090.

 Keyhani, N.O., Boudker, O., and Roseman, S.  (2000) Isolation and Characterization of IIAChb, a Soluble Protein of the Enzyme II Complex Required for the Transport/Phosphorylation of N,N’-Diacetylchitobiose in Escherichia coli. J. Biol. Chem., 275: 33091-33101.

 Keyhani, N.O., Bacia, K., and Roseman, S. (2000) The Transport/Phosphorylation of N,N’-Diacetylchitobiose in Escherichia coli .  Characterization of Phospho-IIBChb and of a Potential Transition State Analogue in the Phosphotransfer Reaction Between the Proteins IIAChb and IIBChb. J. Biol. Chem., 275: 33102-33109.

 Keyhani, N.O.., Rodgers, M. E.,  Demeler, B., Hansen, J., and Roseman, S. (2000) Analytical Sedimentation of the IIAChb and  IIBChb Proteins of the Escherichia coli N,N’-Diacetylchitobiose Phosphotransferase System. Demonstration of a of a Model Phosphotransfer Transition State Complex.  J. Biol. Chem., 275: 33110-33115.

 Keyhani, N.O., and Roseman, S. (1999) Physiological Aspects of Chitin Catabolism in Marine Bacteria. Biochem. Biophys. ACTA 1473:108-122.

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