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Berlin Brandenburg

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    Description: Indiana University-Purdue University Indianapolis (IUPUI) Borrelia burgdorferi, a bacterium which causes Lyme disease, is maintained in nature through a cycle involving two distinct hosts: a tick vector and a mammalian host. To adapt to these two diverse environments, B. burgdorferi undergoes dramatic alterations in its surface lipoprotein. Two essential lipoproteins, outer surface protein A (OspA) and outer surface protein C (OspC), are reciprocally regulated throughout the B. burgdorferi lifecycle. Very little is known about the regulation of OspA. These studies elucidate the regulatory mechanisms controlling the expression of OspA. Various truncations of the ospA promoter were created and then studied in our novel in vitro model of ospA repression or grown within the host-adapted model. A T-Rich region of the ospA promoter was determined to be a cis-element essential for both the full expression and full repression of ospA.
    Keywords: Borrelia Burgdorferi ; Ospa ; Outer Surface Lipoprotein A ; Borrelia Burgdorferi -- Research ; Lyme Disease ; Lyme Disease -- Molecular Aspects ; Spirochetes -- Molecular Aspects ; Lipoprotein A ; Host-Bacteria Relationships ; Bacteria -- Physiology ; Bacterial Cell Walls ; Bacterial Cell Surfaces
    Source: Networked Digital Library of Theses and Dissertations
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