Search Results - "Ayala, F.J."

Using mitochondrial and nuclear markers to evaluate the degree of genetic cohesion among Echinococcus populations by Badaraco, J.L., Ayala, F.J., Bart, J.-M., Gottstein, B., Haag, K.L.

“…Based on the distinctiveness of their mitochondrial haplotypes and other biological features, several recent publications have proposed that some Echinococcus…”
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Phylogenetic character mapping of RADES Probing, a new marker for exploring the clonal evolution of expressed coding sequences in Trypanosoma cruzi, the agent of Chagas disease by Telleria, J., Barnabé, C., Ayala, F.J., Tibayrenc, M.

“…•We survey a standardized set of Trypanosoma cruzi stocks representative of the whole phylogenetic diversity of the parasite.•We present the use of a new…”
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The Echinococcus granulosus antigen B shows a high degree of genetic variability by Arend, A.C., Zaha, A., Ayala, F.J., Haag, K.L.

“…Echinococcus granulosus larvae secret a polymeric lipoprotein known as antigen B (AgB) into the metacestode hydatid fluid. Three similar AgB subunits have been…”
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Erratic evolution of glycerol-3-phosphate dehydrogenase in Drosophila, Chymomyza, and Ceratitis by Kwiatowski, J. (University of California, Irvine, CA.), Krawczyk, M, Jaworski, M, Sharecky, D, Ayala, F.J

“…We have studied the evolution of Gpdh in 18 fruitfly species by sequencing 1,077 nucleotides per species on average. The region sequenced includes four exons…”
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Evolution of behavior by density-dependent natural selection by Guo, P. (University of California, Irvine, CA), Mueller, L.D, Ayala, F.J

“…Theories of density-dependent natural selection predict that evolution should favor those genotypes with the highest per capita rates of population growth…”
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Meager Genetic Variability of the Human Malaria Agent Plasmodium vivax by Leclerc, M. C., Durand, P., Gauthier, C., Patot, S., Billotte, N., Menegon, M., Severini, C., Ayala, F. J., Renaud, F.

“…Malaria is a major human parasitic disease caused by four species of Plasmodium protozoa. Plasmodium vivax, the most widespread, affects millions of people…”
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Superoxide dismutase: an evolutionary puzzle by Lee, Y.M, Friedman, D.J, Ayala, F.J

“…We have obtained the complete amino acid sequence of copper/zinc-containing superoxide dismutase (SOD, superoxide:superoxide oxidoreductase, EC 1.15.1.1) from…”
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Contingent, non-neutral evolution in a multicellular parasite: natural selection and gene conversion in the Echinococcus granulosus antigen B gene family by Haag, K.L, Alves-Junior, L, Zaha, A, Ayala, F.J

“…Recent studies have demonstrated that the Echinococcus granulosus antigen B (AgB) interferes with the intermediate hosts' immune response and is encoded by a…”
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Irradiation-resistance conferred by superoxide dismutase: possible adaptive role of a natural polymorphism in Drosophila melanogaster by Peng, T.X, Moya, A, Ayala, F.J

“…The toxic effects of ionizing radiation to DNA are thought to be due to the generation of the superoxide radical, O2-·. Superoxide dismutase (SOD), which…”
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Vagaries of the molecular clock by Ayala, F.J. (University of California, Irvine, CA.)

“…The hypothesis of the molecular evolutionary clock asserts that informational macromolecules (i.e., proteins and nucleic acids) evolve at rates that are…”
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Nucleotide variation in the tinman and bagpipe homeobox genes of Drosophila melanogaster by Balakirev, E.S, Ayala, F.J

“…The tinman (tin) and bagpipe (bap) genes are members of the NK homeobox gene family of Drosophila, so that tin occupies a higher position than bap in the…”
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Dynamics of single-species population growth: stability or chaos? by Mueller, Laurence D., Ayala, Francisco J.

“…We have examined stability at the carrying capacity for 25 genetically different populations of Drosophila melanogaster. In spite of their genetic…”
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Expression and diversity of Echinococcus multilocularis AgB genes in secondarily infected mice: evaluating the influence of T-cell immune selection on antigenic variation by Graichen, D.A.S., Gottstein, B., Matsumoto, J., Müller, N., Zanotto, P.M.A., Ayala, F.J., Haag, K.L.

“…The T-cell-mediated immune response exhibits a crucial function in the control of the intrahepatic proliferation of Echinococcus multilocularis larvae in mice…”
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Evidence for positive selection in the superoxide dismutase (Sod) region of Drosophila melanogaster by Hudson, R.R, Bailey, K, Skarecky, D, Kwaitowaki, J, Ayala, F.J

“…DNA sequence variation in a 1410-bp region including the Cu,Zn Sod locus was examined in 41 homozygous lines of Drosophila melanogaster. Fourteen lines were…”
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LIVESTOCK TRADE HISTORY, GEOGRAPHY, AND PARASITE STRAINS: THE MITOCHONDRIAL GENETIC STRUCTURE OF ECHINOCOCCUS GRANULOSUS IN ARGENTINA by Haag, K. L, Ayala, F. J, Kamenetzky, L, Gutierrez, A. M, Rosenzvit, M

“…A sample of 114 isolates of Echinococcus granulosus (Cestoda: Taeniidae) collected from different host species and sites in Argentina has been sequenced for…”
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Purification and properties of superoxide dismutase from Drosophila melanogaster by Lee, Y M, Ayala, F J, Misra, H P

“…The major superoxide dismutase ("slow" electromorph) of the fruit fly, Drosophila melanogaster, has been purified to homogeneity. This enzyme contains 2 Cu2+…”
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Redundancy and recombination in the Echinococcus AgB multigene family: is there any similarity with protozoan contingency genes? by Haag, K L, Gottstein, B, Müller, N, Schnorr, A, Ayala, F J

“…Numerous genetic variants of the Echinococcus antigen B (AgB) are encountered within a single metacestode. This could be a reflection of gene redundancy or the…”
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Searching for antigen B genes and their adaptive sites in distinct strains and species of the helminth Echinococcus by Haag, K.L., Zanotto, P.M.A., Alves-Junior, L., Gasser, R.B., Zaha, A., Ayala, F.J.

“…Twenty-seven PCR-derived antigen B (AgB) nucleotide sequences from four Echinococcus species ( Echinococcus granulosus, Echinococcus multilocularis,…”
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Switch in codon bias and increased rates of amino acid substitution in the Drosophila saltans species group by Rodriguez-Trelles, F, Tarrio, R, Ayala, F.J

“…We investigated the nucleotide composition of five genes, Xdh, Adh, Sod, Per, and 28SrRNA, in nine species of Drosophila (subgenus Sophophora) and one of…”
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New Drosophila introns originate by duplication by Tarrio, R, Rodriguez-Trelles, F, Ayala, F.J

“…We have analyzed the phylogenetic distribution of introns in the gene coding for xanthine dehydrogenase in 37 species, including 31 dipterans sequenced by us…”
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