Publication Date

Fall 2011

Document Type

Project Summary

Degree Name

Master of Science


Analytical Chemistry

First Advisor

Walter Henne, Jr., Ph.D.

Second Advisor

Timothy Gsell, Ph.D.

Third Advisor

Aheda Saber, Ph.D.


The main objective of my project is to determine the bacterial cell wall intermediates in E.coli and develop an LCMS method that Phosphomycin is a PEP analogue that irreversibly inhibits UDP-GluNAc-enolpyruvate transferase (MurA enzyme), which prevents the formation of N-acetyl muramic acid, which is an essential element in the Peptidoglycan cell wall. Antibacterial agents have a tremendous impact on human health. Most of the antibacterial agents, including beta lactams target the bacterial cell wall biosynthesis.The pathway for Escherichia coli is shown in page 19. Among the most widely used antibiotics, beta lactams inhibit the penicillin binding protein (PBPs)which block the cross linking reactions of cell wall biosynthesis. A Liquid chromatography-tandem mass spectrometry provides a new technology to detect and quantitation of cell wall intermediates.


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