A body cavity lymphoma-derived cell line (BC1), known to carry both Epstein-Barr virus (EBV) and human herpes virus type 8 (HHV-8; or Kaposi's sarcoma-associated herpesvirus, KSHV), was analysed for the expression of EBV-encoded, growth transformation-associated antigens and cellular phenotype by immunofluorescence staining, Western blotting, RT-PCR and flow cytometry. A similar phenotypic anal...

The iron-sulfur protein of the cytochrome bc1 complex is one of a small number of proteins that are processed in two sequential steps by matrix processing peptidase (MPP) and mitochondrial intermediate peptidase (MIP) during import into Saccharomyces cerevisiae mitochondria. To test whether two-step processing is necessary for import and assembly of the iron-sulfur protein into the cytochrome b...

We have obtained evidence for conformational communication between ubiquinol oxidation (center P) and ubiquinone reduction (center N) sites of the yeast bc1 complex dimer by analyzing antimycin binding and heme bH reduction at center N in the presence of different center P inhibitors. When stigmatellin was occupying center P, concentration-dependent binding of antimycin occurred only to half of...

An ultimate objective of QTL mapping is cloning genes responsible for quantitative traits. However, projects seldom go beyond segments <5 cM without subsequent breeding and genotyping lines to identify additional crossovers in a genomic region of interest. We report on a QTL analysis performed as a preliminary step in the development of a resource for map-based cloning of domestication and impr...

The rapid appearance of resistant malarial parasites after introduction of atovaquone (ATQ) drug has prompted the search for new drugs as even single point mutations in the active site of Cytochrome b protein can rapidly render ATQ ineffective. The presence of Y268 mutations in the Cytochrome b (Cyt b) protein is previously suggested to be responsible for the ATQ resistance in Plasmodium falcip...

when a plant is initially transformed, the transgene is present in a heterozygous form. Since white clover is outcrossing and predominantly self incompatible it is necessary to cross primary transgenic plants to produce an BC1 population, then intercross BC1 transgenic plants to produce an F2 population. The F2 population will have a highly heterogeneous genetic background and a variable alleli...

We investigated inheritance of resistance to Pepper yellow mosaic virus (PepYMV) in Capsicum baccatum var. pendulum accessions UENF 1616 (susceptible) crossed with UENF 1732 (resistant). Plants from generations P1, P2, F1, F2, BC1:1, and BC1:2 were inoculated and the symptoms were evaluated for 25 days. Subsequently, an area under the disease progress curve was calculated and subjected to gener...

To search for p53 target genes throughout the human genome, we applied a cDNA microarray system using adenovirus-mediated transfer of p53 into p53-deficient U373MG (glioblastoma) cells. In this manner, we detected dozens of genes that appeared to be regulated by wild-type p53. We describe here characterization of one such gene, termed CABC1 [chaperone-activity of bc1 complex in Schizosaccharomy...

Several Bacillus species were isolated from rice field soils, and 16S rRNA gene sequence analysis showed that Bacillus cereus was the most abundant. A strain named BC1 showed antifungal activity against Rhizoctonia solani. Bacteriophages infecting strain BC1 were isolated from the same soil sample. The isolated phage PK16 had an icosahedral head of 100 ± 5 nm and tail of 200 ± 5 nm, indicating ...

Cadmium (Cd) tolerance seems to be a constitutive species-level trait in Arabidopsis halleri. In order to identify genes potentially implicated in Cd tolerance, a backcross (BC1) segregating population was produced from crosses between A. halleri ssp. halleri and its closest non-tolerant relative A. lyrata ssp. petraea. The most sensitive and tolerant genotypes of the BC1 were analysed on a tra...