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Creator:: Wheeler, Linda J. and Mathews, Christopher K.
Abstract:: Saccharomyces cerevisiae contains three NAD⁺/NADH kinases, one of which is localized in mitochondria and phosphorylates NADH in preference to NAD⁺. Strand et al (Euk. Cell 2:809 (2003)) reported that a yeast mutation in POS5, which encodes the mitochondrial NADH kinase, is a mutator, specific for mitochondrial genes. Because of the...
Resource Type:: Article
Full Text:: * Linda J. Wheeler and Christopher K. Mathews1 From the Department of Biochemistry and Biophysics

Creator:: Chimploy, Korakod, Song, Shiwei, Wheeler, Linda J., and Mathews, Christopher K.
Abstract:: Deoxyribonucleoside triphosphate pools in mammalian mitochondria are highly asymmetric, and this asymmetry probably contributes toward the elevated mutation rate for the mitochondrial genome as compared with the nuclear genome. To understand this asymmetry, we must identify pathways for synthesis and accumulation of dNTPs within mitochondria. We have identified ribonucleotide reductase...
Resource Type:: Article
Full Text:: Association with Mammalian Liver Mitochondria Korakod Chimploy1, Shiwei Song2, Linda J. Wheeler, and

Creator:: Saldivar, Joshua C., Miuma, Satoshi, Bene, Jessica, Hosseini, Seyed Ali, Shibata, Hidetaka, Sun, Jin, Wheeler, Linda J., Mathews, Christopher K., and Huebner, Kay
Abstract:: Genomic instability drives tumorigenesis, but how it is initiated in sporadic neoplasias is unknown. In early preneoplasias, alterations at chromosome fragile sites arise due to DNA replication stress. A frequent, perhaps earliest, genetic alteration in preneoplasias is deletion within the fragile FRA3B/FHIT locus, leading to loss of Fhit protein expression....
Resource Type:: Article
Full Text:: , Seyed Ali Hosseini2, Hidetaka Shibata2¤, Jin Sun2, Linda J. Wheeler3, Christopher K. Mathews3, Kay

Creator:: Mannava, Sudha, Moparthy, Kalyana C., Wheeler, Linda J., Leonova, Katerina I., Wawrzyniak, Joseph A., Bianchi-Smiraglia, Anna, Berman, Albert E., Flanagan, Sheryl, Shewach, Donna S., Zeitouni, Nathalie C., Gudkov, Andrei V., Mathews, Christopher K., and Nikiforov, Mikhail A.
Abstract:: The down‐regulation of dominant oncogenes, including C‐MYC, in tumor cells often leads to the induction of senescence via mechanisms that are not completely identified. In the current study, we demonstrate that MYC‐depleted melanoma cells undergo extensive DNA damage that is caused by the underexpression of thymidylate synthase (TS) and ribonucleotide...
Resource Type:: Article
Full Text:: J. Wheeler3, Katerina I. Leonova1, Joseph A. Wawrzyniak1, Anna Bianchi‐Smiraglia1, Albert E

Creator:: Mannava, Sudha, Moparthy, Kalyana C., Wheeler, Linda J., Natarajan, Venkatesh, Zucker, Shoshanna N., Fink, Emily E., Im, Michael, Flanagan, Sheryl, Burhans, William C., Zeitouni, Nathalie C., Shewach, Donna S., Mathews, Christopher K., and Nikiforov, Mikhail A.
Abstract:: In normal human cells, oncogene-induced senescence (OIS) depends on induction of DNA damage response (DDR). Oxidative stress and hyper-replication of genomic DNA have been proposed as major causes of DNA damage in OIS cells. Here we report that down-regulation of deoxyribonucleoside pools is another endogenous source of DNA damage in...
Resource Type:: Article
Full Text:: Undergoing Oncogene-Induced Senescence Sudha Mannava 1 , Kalyana C. Moparthy 1 , Linda J. Wheeler 4

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