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Medicinal Biochemistry / Human Diseases /
Arthritis and Joint Diseases

Mohnen, Debra E-mail: dmohnen@ccrc.uga.edu
Tendons are connective tissues that transmit the force created in the muscle to the bone, and thereby make movement possible. The basic functional units in tendons are collagen fibers that are crosslinked by proteoglycans. The proteoglycans are believed to influence the ability of the tendons to respond to strains and stresses. In collaboration with other researchers in The Soft Tissue Center we are using chicken as a model system to study the role of proteoglycans in tendon structure, function, and repair. Current emphasis involves characterizing the proteoglycans in chicken gastrocnemius tendons and studying how the proteoglycans change in tendons under stress.
Keywords: pectin, cell wall, polysaccharide, homogalacturonan, glycosyltransferase, galacturonosyltransferase, methyltransferase, epimerase, oligosaccharide, oligogalacturonide, Golgi, membrane, tendon, proteoglycan, glycosaminoglycan

Travis, James E-mail: jtravis@uga.edu
Our laboratory investigates the role of bacterial proteinases as virulence factors in infectious diseases. These proteinases enable bacteria to obtain peptides and amino acids, and also to modulate host defenses to the benefit of the bacteria. Porphyromonas gingivalis, a central pathogen in periodontal disease, provides a prime example of an organism with proteolytic enzymes that can modulate host defense systems. Our research group is focused on elucidating the exact roles of proteinases secreted by this and other bacterial species in infection of the human host.
Keywords: Proteinase / protease / periodontal disease / proteinase inhibitors / bacterial pathogenesis




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