Gregory Hunter, Ph.D.

College Of Medicine Molecular Medicine

Research Assistant Professor, Department of Biochemistry and Molecular Biology, College of Medicine, University of South Florida

Contact Info 12901 Bruce B. Downs Blvd.
Tampa, FL 33612

Academic Email:

Academic Phone: (813) 974-6176


  • PHD, Philosophy in Medical Sciences, University Of South Florida, 1999
  • B.A. and M.A., Chemistry, University of South Florida, 1993

Interdisciplinary and Emerging Signature Programs

  • Other

Research Interests

  • My research interests encompass all aspects of biomolecular recognition processes, including but not limited to enzymology, conformational dynamics, and protein-protein interactions. Available structural, chemical, and kinetic information are used as a rationale basis for designing experimental approaches to answer key questions regarding the way in which enzymes work, and how they might be modified or targeted for beneficial therapeutic or industrial applications. We utilize an extensive variety of molecular biological and spectroscopic tools, and collaborate freely with many other researchers located all over the world.

Recent Publications

  • Hunter, GA.Sampson, MP.Ferreira, GC. Metal ion substrate inhibition of ferrochelatase. The Journal of biological chemistry. 283(35) : 23685-91, 2008.
  • Hunter, GA.Zhang, J.Ferreira, GC. Transient kinetic studies support refinements to the chemical and kinetic mechanisms of aminolevulinate synthase. The Journal of biological chemistry. 282(32) : 23025-35, 2007.
  • Turbeville, TD.Zhang, J.Hunter, GA.Ferreira, GC. Histidine 282 in 5-aminolevulinate synthase affects substrate binding and catalysis. Biochemistry. 46(20) : 5972-81, 2007.
  • Hunter, GA.Rivera, E.Ferreira, GC. Supraphysiological concentrations of 5-aminolevulinic acid dimerize in solution to produce superoxide radical anions via a protonated dihydropyrazine intermediate. Archives of biochemistry and biophysics. 437(2) : 128-37, 2005.
  • Hunter, GA.Ferreira, GC. Pre-steady-state reaction of 5-aminolevulinate synthase. Evidence for a rate-determining product release. The Journal of biological chemistry. 274(18) : 12222-8, 1999.
  • Hunter, GA.Ferreira, GC. Lysine-313 of 5-aminolevulinate synthase acts as a general base during formation of the quinonoid reaction intermediates. Biochemistry. 38(12) : 3711-8, 1999.
  • Gong, J.Hunter, GA.Ferreira, GC. Aspartate-279 in aminolevulinate synthase affects enzyme catalysis through enhancing the function of the pyridoxal 5'-phosphate cofactor. Biochemistry. 37(10) : 3509-17, 1998.
  • Tan, D.Harrison, T.Hunter, GA.Ferreira, GC. Role of arginine 439 in substrate binding of 5-aminolevulinate synthase. Biochemistry. 37(6) : 1478-84, 1998.
  • Ferreira, GC.Vajapey, U.Hafez, O.Hunter, GA.Barber, MJ. Aminolevulinate synthase: lysine 313 is not essential for binding the pyridoxal phosphate cofactor but is essential for catalysis. Protein science : a publication of the Protein Society. 4(5) : 1001-6, 1995.
  • Hunter, GA.Ferreira, GC. A continuous spectrophotometric assay for 5-aminolevulinate synthase that utilizes substrate cycling. Analytical biochemistry. 226(2) : 221-4, 1995.

Positions Held

  • Principal Scientist Smith and Nephew Medical Inc. 2002 - 2004)
  • Postdoctoral Research Fellow (Mote Marine Laboratory, Massachusetts Institute of Technology 1999 - 2002)
  • Graduate Student (Department of Biochemistry and Molecular Biology, College of Medicine, University of South Florida 1994 - 1999)
  • Research and Development Chemist Bausch and Lomb Pharmaceuticals 1993 - 1994)
  • Graduate Student & Teaching Assistant (Department of Chemistry, University of South Florida 1990 - 1993)