The Payne Lab Previous Members


Aja Gore: Carbon Metabolism Influences Shigella flexneri pathogenesis. Postdoctoral fellow at Uniformed Services University of the Health Sciences.

Megan Boulette: Shigella flexneri ArcA and Fnr Regulate Iron Acquisition and Contribute to Plaque Formation Under Anaerobic Conditions. Postdoctoral Fellow with Marvin Whiteley, UT Austin.

Ashima Sharma: Roles of DksA and Hfq in Shigella flexneri Virulence. Postdoctoral Fellow, NIH.

Nicola Davies: Iron Acquisition by Shigella dysenteriae and Shigella flexneri.

Amanda Oglesby: Iron Regulation of Acid Resistance in Shigella flexneri 2005. Postdoctoral associate at the University of Colorado HSC Fitzsimmons, Microbiology Department.

Georgiana Purdy: Characterization of S. flexneri DegP. 2003. Assistant Professor, Department of Molecular Microbiology, Oregon Health and Science University.

Stephanie Reeves: Iron Acquisition in the Intracellular Environment of the Host: Multiple Iron Transport Systems in Shigella dysentariae. August 2001.

Stefan Seliger: Development of Bacterial Delivery Systems for the Introduction of DNA into Eukaryotic Cells. August 2001. Genentech.

Alfredo G. Torres: Characterization of the Heme Transport System in Escherichia coli O157:H7, and Importance of Iron Uptake Systems in Virulence. May 1999. Associate Professor. University of Texas Medical Branch.

Deborah Ann Occhino: Vibrio cholerae Iron Transport: Characterization of Two TonB Systems and Components of a Heme Transport System. May 1998. Amgen.

Mei Hong: Identification of Shigella flexneri virulence associated genes. August 1997.

Melody Mills: Shigella dysentariae heme iron utilization: genetics, regulation, and detection of an analogous system in Escherichia coli. August 1996. Program officer, NIH NIAID.

Karen Sue Huffman-Kelley: Cloning and characterization of the siderophore synthesis and transport genes in Erwinia stewartii. May 1995

Douglas Paul Henderson: Heme iron utilization in Vibrio cholerae: genetics and role in virulence. December 1993. Professor, Department of Biology, UT Permian Basin.

Virginia Lynn Headley: Differential protein expression by Shigella flexneri. December 1990. e-mail

Michael Peter Schmitt: Genetics and regulation of the enterobactin genes in strains of Shigella flexneri. May 1989. FDA.

Panagiotis A. Daskaleros: Studies of congo red binding and virulence in Shigella species. August 1988.

Kathleen Mary Lawlor: The genetics of the aerobactin iron transport system of Shigella species and its role in virulence. May 1987. Physician.

Suzanne Lea Paula Sigel Barth: Iron transport systems of Vibrio cholerae clinical and environmental isolates. May 1983. Adjunct Associate Professor, UT Austin.


Scott A. Mogull. dksA is required for the intercellular spread and IcsA localization of Shigella flexneri via an Rpo-S independent mechanism. December 2000.  

Yuki Gleason. Characterization of the vps operon, a chromosomal region involved in Shigella flexneri virulence. December 1998

Janice Stoebner Boecker: Iron transport and hemolysin production in Vibrio cholerae. May 1988.

Karen Sue Huffman-Kelley: Effects of ions on growth, siderophore synthesis, and ESP production in Erwinia stewartii. August 1990

Carol Elizabeth Stugard: Heme-binding proteins associated with congo red binding and virulence of Shigella flexneri and enteroinvasive Escherichia coli. August 1989.

Candye Renee Andrus: Siderophores and iron regulated membrane proteins in pathogenic Vibrio and Aeromonas species. August 1983. Physician. Madison, WI.


Erin Murphy, Ph.D.: Assistant Professor of Medical Microbiology, Department of Biological Sciences, Ohio University College of Osteopathic Medicine ( e-mail

Sanchita Bhadra, Ph.D.

David Pearce, Ph.D.: Atlas

Zhengyu Feng, Ph.D: Attorney, Washington, DC

Gregory F. Lopreato

David Niesel: Professor of Microbiology, University of Texas Medical School, Galveston. e-mail

Kelly Reed: Associate Professor of Biology, Austin College, Sherman, TX.

Laura Runyen-Janecky:  Assistant Professor of Biology, University of Richmond, Richmond,VA e-mail web-page


Leodocia Pope, Ph.D


Keren Hilgendorf: Graduate student, MIT

Lindsey Hoover: Graduate student, University of Wisconsin

Claire Joseph

Amir Mansoori

Jessica Chang

Ian Whitney

Anna Moorhead

Andreas Leimbach

Kim Tipton: Graduate Student, University of California San Francisco

Ana Mendez:

Eva Rab: Graduate Student, University of Texas, Southwestern Medical School

Jennifer Gordon: Postdoctoral fellow, UCLA.

Adrienne Garcia: BioCrest (Stratagene Manufacturing Facility)

Harshaben Mistry: College of Pharmacy, University of Texas


Vanamala Kanukurthy

Valerie Virta