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Mapping and characterization of mel-43(sb41), a gene required for early embryonic viability in C. elegansDownload
A genetic screen for dominant, temperature-sensitive, maternal-effect embryonic lethal mutations identified mel-43(sb41), a gene required for early embryonic viability (Mitenko et al., 1997). Linkage mapping placed mel-43 within a small region on chromosome IV. Genetic analyses suggested that...
Drosophila ATM and ATR have distinct activities in the regulation of meiotic DNA damage and repairDownload
Tiong, S., McKim, K.S., Campbell, S.D., White-Brown, S.K., Paul, A., Pedersen, M., Joyce, E.F.
Ataxia telangiectasia–mutated (ATM) and ataxia telangiectasia–related (ATR) kinases are conserved regulators of cellular responses to double strand breaks (DSBs). During meiosis, however, the functions of these kinases in DSB repair and the deoxyribonucleic acid (DNA) damage checkpoint are...
Using 1H-NMR based metabolomics to investigate the pathological consequences of mitochondrial disease and human rabies infectionDownload
Mitochondrial diseases encompass a wide range of clinical phenotypes. The etiology of these disorders is extremely complex; mitochondria are central to energy metabolism and dysfunction can have a profound effect on global metabolism. The original objective of this thesis was to use 1H-NMR based...
In the newly fertilized embryo, meiotic and mitotic spindles form consecutively within the same egg cytoplasm. The order of events during this transition is controlled, in part, via the regulation of the microtubule cytoskeleton. Herein, I show that mel-43 is part of a small paralogous gene...
Regulation of microtubule dynamics is essential for many cellular processes, including proper assembly and function of the mitotic spindle. One mechanism for temporal and spatial regulation of microtubule dynamics is provided by the kinesin-13 microtubule depolymerizing enzymes, among which MCAK...
Spindle assembly pathways are conserved in many organisms. Defects in spindle assembly can result in aneuploidy, a common cause of cell death and cancer. A better understanding of spindle assembly pathways is required to fully appreciate how defects in spindle assembly manifest as aneuploidy and...
Meiosis in eukaryotes includes a developmentally programmed pre-meiotic G2 phase arrest before the onset of MI division mediated by inhibitory phosphorylation of Cdk1. There are two inhibitory kinases, Wee1 and Myt1. Myt1 mediated Cyclin B-Cdk1 regulation serves as a conserved mechanism for...
An investigation of factors that regulate cytoskeleton in the first mitotic division of the C. elegans embryoDownload
Microtubule dynamics is regulated by naturally occurring microtubule-associated proteins occurring in the cellular environment as well as by natural and synthetic compounds. These compounds target the microtubule cytoskeleton and serve as anti-mitotic drugs. Therefore, microtubules continue to be...