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Full-Text Articles in Molecular Biology

Mutations Of Conserved Non-Coding Elements Of Pitx2 In Patients With Ocular Dysgenesis And Developmental Glaucoma., Meredith E. Protas, Eric Weh, Tim Footz, Jay Kasberger, Scott C. Baraban, Alex V. Levin, L. Jay Katz, Robert Ritch, Michael A. Walter, Elena V. Semina, Douglas B. Gould Sep 2017

Mutations Of Conserved Non-Coding Elements Of Pitx2 In Patients With Ocular Dysgenesis And Developmental Glaucoma., Meredith E. Protas, Eric Weh, Tim Footz, Jay Kasberger, Scott C. Baraban, Alex V. Levin, L. Jay Katz, Robert Ritch, Michael A. Walter, Elena V. Semina, Douglas B. Gould

Natural Sciences and Mathematics | Faculty Scholarship

Mutations in FOXC1 and PITX2 constitute the most common causes of ocular anterior segment dysgenesis (ASD), and confer a high risk for secondary glaucoma. The genetic causes underlying ASD in approximately half of patients remain unknown, despite many of them being screened by whole exome sequencing. Here, we performed whole genome sequencing on DNA from two affected individuals from a family with dominantly inherited ASD and glaucoma to identify a 748-kb deletion in a gene desert that contains conserved putative PITX2 regulatory elements. We used CRISPR/Cas9 to delete the orthologous region in zebrafish in order to test the pathogenicity of …


Quaternary Interactions And Supercoiling Modulate The Cooperative Dna Binding Of Agt, Manana Melikishvili, Michael G. Fried Jul 2017

Quaternary Interactions And Supercoiling Modulate The Cooperative Dna Binding Of Agt, Manana Melikishvili, Michael G. Fried

Center for Structural Biology Faculty Publications

Human O6-alkylguanine-DNA alkyltransferase (AGT) repairs mutagenic O6-alkylguanine and O4-alkylthymine adducts in single-stranded and duplex DNAs. The search for these lesions, through a vast excess of competing, unmodified genomic DNA, is a mechanistic challenge that may limit the repair rate in vivo. Here, we examine influences of DNA secondary structure and twist on protein–protein interactions in cooperative AGT complexes formed on lesion-free DNAs that model the unmodified parts of the genome. We used a new approach to resolve nearest neighbor (nn) and long-range (lr) components from the ensemble-average cooperativity, ωave. We found …