Proteomics

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Proteomics is the study of proteins expressed by a particular genome. The Murray Group has several collaborative projects in this area.


Contents

Group Members

Kermit Murray
Lancia Darville

Research

Isolation of Antimicrobial Peptides from the American Alligator (Alligator mississippiensis)

Significant anecdotal evidence exists to suggest that alligators and crocodiles are resistant to microbial infection. These animals typically live in environments with large concentrations of pathogenic microbes, yet their wounds typically heal without infection. Alligator leukocytes contain cationic peptides that are believed to be responsible for the strong antimicrobial activity against bacteria, virus and fungi. To begin to understand the structure and function of the peptides within the alligator’s blood that contribute to the antimicrobial activity we use a proteomics approach. Some of the methods used include one and two-dimensional gel electrophoresis, reversed phase HPLC and nano electrospray tandem mass spectrometry for detection and peptide sequencing.

This research is in collaboration with Dr. Mark Merchant at McNeese State University.

Lancia Darville, Doctoral Graduate Student and Dr. Mark E. Merchant.

Publications

Bhattacharya, S. H.; Gal, A. A.; Murray, K. K., Laser Capture Microdissection MALDI for Direct Analysis of Archival Tissue. J Proteome Res 2003, 2, 95.

Abstracts

ASMS 2008: Isolation and Identification of Low Molecular Weight Proteins from the American Alligator (Alligator mississippiensis) using Gel Separation with Nano ESI-Q-TOF
ASMS 2007: Analysis of Leukocyte Extracts from the American Alligator using Gel Electrophoresis with Nano Liquid Chromatography with Mass Spectrometry
ASMS 2005: Laser Microdissection MALDI Mass Spectrometry of Human Aortic Tissue
IMSC 2003: Direct Laser Desorption Mass Spectrometry of Cells and Tissue

Outside Links

Dr. Mark E. Merchant
Science News
Louisiana State University School of Veterinary Medicine
Pennington Biomedical Research Center
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