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Application
of mass spectrometry to the study of differential protein expression
(proteomics), enzyme mechanisms, macromolecular structure, and carbohydrates
in disease
Major
research interests in Dr. Gibson¹s laboratory encompass the growing
intersection of modern mass spectrometry and structural biology,
with current projects including studies on the molecular events
underlying bacterial pathogenesis, mechanisms of oxidative stress
in neurodegenerative diseases, and tertiary protein structure determination.
These efforts all rely on the structure determination of important
bio-molecules and the continued development and application of advanced
mass spectrometry and other bio-analytical techniques.
Current
active projects in Dr. Gibson group involve five major research
areas;
1)
structural, biological and immunochemical studies of the role of
surface carbohydrates (lipooligosaccharides, or LOS) in pathogenic
Neisseria and Haemophilus spp.,
2)
the development of a carbohydrate-based vaccine and other therapeutic
strategies,
3)
the mechanism of iron-acquisition and iron-regulation in Mycobacterium
tuberculosis and the identification of iron-regulated proteins,
4)
the role of oxidative stress mediated through mitochondrial dysfunction
and its contribution to altered protein expression (Œproteomics¹)
and oxidative modification of DNA and proteins in Alzheimer¹s disease,
and
5)
the development of a mass spectrometry-based method using chemical
crosslinking and computation for the determination of the tertiary
structures of proteins.
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