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Genetic analysis of basidiomycete Trametes versicolor 1666 from the Komarov Botanical Institute (LEBIN) Collection has been carried out that verified the phylogenetic position of the strain and revealed the presence of a single laccase gene. A study of cultivation dynamics of basidiomycete showed a low level of laccase, peroxidase, and Mn-peroxidase production on glucose-peptone and mineral media. The level of laccase activity in the culture liquid (CL) remained practically unchanged during cultivation in a medium optimized using full factorial experiment as compared to the standard medium. An addition of laccase inducers (syringaldazine, caffeic acid, and synaptic acid) had no effect on the enzyme activity in the culture liquid. Real time PCR showed a lack of reliable difference in the level of laccase gene expression when cultivating the strain under optimal conditions with and without copper ions in the medium. The transcription behavior of laccase gene and occurrence of enzyme activity when cultivating T. versicolor 1666 strain testify to the enzyme constitutive synthesis and the existence of additional regulatory ways in the laccase gene expression. [ABSTRACT FROM AUTHOR]

Mutations in three genes PSEN1, PSEN2, and APP are known to be a cause of familial forms of Alzheimer’s disease ( AD). APOE gene polymorphism is a strong risk genetic factor for AD. We have evaluated allele and genotype frequency distribution of rs11136000 polymorphism in the clusterin ( CLU) gene (or apolipoprotein J, APOJ) in the samples from three Russian populations and in AD patients. Genome-wide association studies in samples from several European populations have recently revealed the highly significant association of CLU gene with AD ( p = 8.5 × 10−10). We found no differences in allele and genotype frequencies of rs11136000 between the populations from the Moscow, Ural, and Siberia regions. The allele frequencies are close to those in European populations. The genetic association analysis in cohort of AD patients and normal individuals (>500 individuals in each group) revealed no significant association of the rs11136000 polymorphism in CLU gene with Alzheimer’s disease in Russian populations. Although our results showed that the CLU gene polymorphism rs11136000 is likely not a major genetic factor for the common form of Alzheimer’s disease, the data do not rule out the possibility of a modest effect of CLU and interaction between CLU and APOE genotypes in etiology of Alzheimer’s disease. [ABSTRACT FROM AUTHOR]