Albino Mutants
Mostrando 1-12 de 43 artigos, teses e dissertações.
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1. Production and evaluation of albino mutants of Sprorothrix schenckii / Produção e avaliação de mutantes albinos de Sporothrix schenckii
Melanin is an important factor intrinsically related to the virulence of the Sporothrix schenckii. Mutant albino conidia are usually used as inoculants for the evaluation of the properties of melanin in experimental models for the study of sporotrichosis. The goals of this study were to analyze the presence of melanin in S. schenckii conidia, and to produce
Publicado em: 2010
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2. Case study spontaneous of canine and feline sporotrichosis, and evaluation of the melanin in cells of Sporothrix schenckii in model murine / Estudo de casos espontâneos de esporotricose canina e felina, e avaliação da melanina em células de Sporothrix schenckii em modelo murino
Sporotrichosis is a zoonotic mycosis, caused by dimorphic fungus Sporothrix schenckii, that attacks the man and several animal species, especially domestic felines. Among the factors of patogenicity of the fungus, stands out the melanin presence. This work had as objective: to study spontaneous cases of esporotricose in canine and felines, evaluating the asp
Publicado em: 2007
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3. Tyrosinases of murine melanocytes with mutations at the albino locus.
Tyrosinase (monophenol monooxygenase; monophenol, L-dopa:oxygen oxidoreductase, EC 1.14.18.1) is a key enzyme in the synthesis of melanin. Reduced levels of tyrosinase play an important role in albinism. The data described here show differences in the expression and characteristics of tyrosinase in cutaneous murine melanocytes grown in culture from normal wi
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4. cor Gene Expression in Barley Mutants Affected in Chloroplast Development and Photosynthetic Electron Transport1
The expression of several barley (Hordeum vulgare) cold-regulated (cor) genes during cold acclimation was blocked in the albino mutant an, implying a chloroplast control on mRNAs accumulation. By using albino and xantha mutants ordered according to the step in chloroplast biogenesis affected, we show that the cold-dependent accumulation of cor14b, tmc-ap3, a
American Society of Plant Biologists.
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5. Recombination and Complementation of Albino Mutants in Neurospora
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6. Deficiency in plasma protein synthesis caused by x-ray-incuded lethal albino alleles in mouse.
Plasma protein synthesis was studied in mice bearing x-ray induced lethal mutations at the albino locus. Newborn albino mutants showed a decrease in each of the three principal plasma proteins, albumin, alpha-fetoprotein, and transferrin, when compared with colored littermate controls. Incorporation of [14C]leucine into plasma proteins of the newborn albinos
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7. Photoregulation of the Carotenoid Biosynthetic Pathway in Albino and White Collar Mutants of Neurospora crassa
The conversion of isopentenyl pyrophosphate to phytoene in Neurospora crassa requires both a soluble and a particulate fraction. Soluble and particulate enzyme fractions obtained from light-treated and dark-grown wild type, albino-1, albino-2, albino-3, and white collar-1 strains were mixed in various combinations, and the activity for conversion of [1-14C]i
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8. Genetic and Developmental Analysis of Some New Color Mutants in the Goldfish, CARASSIUS AURATUS
The genotypes of three color mutants in goldfish: a depigmentation character of larval melanophores, albinism and a recessive-transparent character, were analyzed by crossing experiments. The depigmentation character in the common goldfish is controlled by two dominant multiple genes, Dp 1 and Dp2, and only fish with double recessive alleles dp1dp1 dp2dp2 ca
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9. Deletions near the albino locus on chromosome 7 of the mouse affect the level of tyrosine aminotransferase mRNA.
Overlapping chromosomal deletions at the albino locus on chromosome 7 of the mouse affect the expression of several liver enzymes, including tyrosine aminotransferase (TAT; L-tyrosine:2-oxoglutarate aminotransferase, EC 2.6.1.5). With cloned TAT DNA the integrity of the TAT structural gene and its expression and inducibility by glucocorticoids and cAMP were
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10. Analysis of the Albino-Locus Region of the Mouse. I. Origin and Viability
Numerous specific-locus experiments designed to test the mutagenic effect of external radiation have yielded, in over 3,600,000 animals observed, altogether 119 presumed mutations involving the c locus. Of these, 55 were viable and albino (cav), 13 were viable and of various intermediate pigment types (cxv), four were subvital (cas and cxs), seven were neona
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11. Biosynthesis and Functions of Melanin in Sporothrix schenckii
Sporothrix schenckii is a human pathogen that causes sporotrichosis, an important cutaneous mycosis with a worldwide distribution. It produces dark-brown conidia, which infect the host. We found that S. schenckii synthesizes melanin via the 1,8-dihydroxynaphthalene pentaketide pathway. Melanin biosynthesis in the wild type was inhibited by tricyclazole, and
American Society for Microbiology.
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12. An essential role of a TatC homologue of a ΔpH- dependent protein transporter in thylakoid membrane formation during chloroplast development in Arabidopsis thaliana
At least three transport systems function in targeting nuclear-encoded chloroplast proteins to the chloroplast thylakoid membrane. One of these systems requires a thylakoid pH gradient and is named the ΔpH-dependent protein transport system. A similar ΔpH export system of Escherichia coli contains four components, twin arginine translocation A (TatA), TatB
The National Academy of Sciences.