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Biochemistry

Washington University in St. Louis

2023

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Uvrd1 Helicase Of Mycobacterium Tuberculosis That Can Be Activated By Multiple Unique Mechanisms, Ankita Chadda Jul 2023

Uvrd1 Helicase Of Mycobacterium Tuberculosis That Can Be Activated By Multiple Unique Mechanisms, Ankita Chadda

Arts & Sciences Electronic Theses and Dissertations

Abstract Mycobacterium tuberculosis (Mtb) causes tuberculosis disease in humans and is one of the leading causes of death worldwide due to infectious agents. During infection, Mtb is exposed to reactive oxygen species and reactive nitrogen intermediates from the host immune response that causes DNA damage. UvrD-like helicases are involved in DNA repair and use energy from ATP hydrolysis to translocate on single stranded DNA (ssDNA) or unwind double-stranded DNA (dsDNA) to remove the damaged DNA strand. Previous studies on UvrD-like helicases have shown that they exist in a monomer-dimer equilibrium and unwind only as dimers in the absence of accessory …