BACKGROUND Homologous recombination is of eminent importance both in germ cells, to generate genetic diversity during meiosis, and in somatic cells, to safeguard DNA from genotoxic damage. The genetically well-defined RAD52 pathway is required for these processes in the yeast Saccharomyces cerevisiae. Genes similar to those in the RAD52 group have been… (More)
Monte Carlo calculations in the Gibbs ensemble are reported for pure quadrupolar Lennard-Jones fluids. The vapour-liquid equilibrium curves, critical temperatures, and critical densities are calculated for various quadrupolar strengths (e*' = Q'/Eu' = 1.0, 1.5, 2.0 and 2.5). It is shown that as the quadrupolar strength increases both the critical… (More)
Checkpoints of DNA integrity are conserved throughout evolution, as are the kinases ATM (Ataxia Telangiectasia mutated) and ATR (Ataxia- and Rad-related), which are related to phosphatidylinositol (PI) 3-kinase   . The ATM gene is not essential, but mutations lead to ataxia telangiectasia (AT), a pleiotropic disorder characterised by radiation… (More)
The structural maintenance of chromosomes (SMC) protein encoded by the fission yeast rad18 gene is involved in several DNA repair processes and has an essential function in DNA replication and mitotic control. It has a heterodimeric partner SMC protein, Spr18, with which it forms the core of a multiprotein complex. We have now isolated the human orthologues… (More)
The Saccharomyces cerevisiae RAD23 gene is involved in nucleotide excision repair (NER). Two human homologs of RAD23, HHR23A and HHR23B (HGMW-approved symbols RAD23A and RAD23B), were previously isolated. The HHR23B protein is complexed with the protein defective in the cancer-prone repair syndrome xeroderma pigmentosum, complementation group C, and is… (More)
Monte Carlo simulations in the Gibbs ensemble are presented for the two-dimensional Lennard-Jones fluids. We have considered the full Lennard-Jones potential and the truncated (at 2.50) and shifted potential. It is shown that the critical temperature depends largely on the details of the truncation of the potential. These differences are by no means small.