Recent advances in understanding the molecular mechanisms of mutagenesis indicate that most mutations are dependent on the activity of translesion synthesis DNA polymerases. The impact of reducing the level of these polymerases on mutagenesis and...
Unrepaired DNA damage poses a serious threat to the genetic stability of a replicating cell. One mechanism of tolerating this damage is translesion DNA synthesis (TLS), in which an accessory polymerase synthesizes DNA directly across from a damaged...
The Y family of DNA polymerases in higher eukaryotes contains at least four members which are implicated in potentially error-prone replication through unrepaired damage in the genome. These proteins are encoded by the REV1, POLH, POLI, and POLK...
Few previous studies have compared microbial communities in subterranean and surface environments. Chemical analyses used to characterize the surface and cave microbial environments indicated limited exchange between surface and subsurface waters....
Background: When rat salivary gland cells are cultured in vitro, they dedifferentiate within 24 h. Hypothesis: Growth factors will prevent de-differentiation of primary cultures of parotid gland cells, and they will induce differentiation of ParC5...
High-throughput sequencing has provided a myriad of genetic data for thousands of organisms. Computational analysis of one data type, expressed sequence tags (ESTs) yields insight into gene expression, alternative splicing, tissue specificity gene...
The vast knowledge of nucleic acids is evolving and it is now known that DNA can adopt highly complex, heterogeneous structures. Among the most intriguing are the G-quadruplex structures, which are thought to play a pivotal role in cancer...
The inherited bone marrow failure syndromes (IBMFS) encompass a heterogeneous collection of rare disorders characterized by hematological abnormalities, generalized growth delays, and an increased incidence of malignant transformation. These...
N-acetyltransferase 1 (NAT1) is a phase II metabolic enzyme responsible for the biotransformation of aromatic and heterocyclic amine carcinogens such as 4-aminobiphenyl (ASP). NAT1 catalyzes N-acetylation of arylamines as well as the 0-acetylation...
While investigating estrogen response element (ERE) binding properties of Erα in de-identified human breast cancer extracts, additional proteins were observed that recognized ERE sequences (ERE-BP). In order to unravel the apparent role of these...
Ribosomal biogenesis failure may contribute to neurodegenerative diseases, while its excessive activation has been shown to drive tumor growth. As ribosomal production is initiated and regulated by the Pol1-mediated transcription of rRNA genes in...
G-quadruplexes are thought to have biological importance, with studies based on small molecule interactions and quadruplex-interactive antibodies demonstrating their potential for formation in vivo. One potential biological function of quadruplex...
Hypoxia is characterized by an inadequate oxygen supply to the tissues in
proportion to their metabolic needs, and is a primary factor in traumatic CNS
injury, strokes, cardiopulmonary diseases, and obstructive sleep apnea. The
cAMP-dependent...
