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  • 1955-1959  (22)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Role of Metals in Enzymes with Special Reference to Flavoproteins (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 800-804 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING the past five years notable advances have been made in identifying a range of flavoprotein and pyridine nucleotide enzymes that contain metals. In some enzymes the function of the metal has been determined. In this summary the following topics will be discussed : some properties of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179800a0
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  • 2
    Electronic Resource
    Electronic Resource
    Hyponitrite Reductase in Neurospora (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 533-534 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have identified an enzyme in Neurospora which will reduce sodium hyponitrite to hydroxylamine by reduced diphosphopyridine nucleotide. The hydroxylamine was further reduced to ammonia by a specific reductase present in the extract. Neurospora crassa wild type 5279a (macroconidial) was grown in ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179533a0
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  • 3
    Electronic Resource
    Electronic Resource
    Some Problems associated with determining Iron in Plants (1956)
    [s.l.] : Nature Publishing Group
    Nature 177 (1956), S. 336-337 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Various workers have shown that the iron determined by leaf analysis is considerably less after washing the leaves either in water containing a detergent or in dilute hydrochloric acid3. This difference has been assumed to result from the removal of iron contamination on leaf surfaces, although it ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/177336a0
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Fungicides on Fungus Enzymes (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 638-639 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have examined the effects of four fungicides upon enzymes of Sclerotinia laxa Aderh. and Ruhl., the fungus responsible for the blossom wilt disease of fruit trees. The fungicides used were captan, copper (as sulphate), lime sulphur and o-phenyl phenol. Cultures of the fungus were grown on ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/178638b0
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of Molybdenum Deficiency on Catalase and Peroxidase in Neurospora (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 148-149 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In this communication it is shown that a deficiency of molybdenum in Neurospora crassa reduced the catalase and peroxidase enzymes in cell-free extracts of the felts by 1/10 and 1/4 respectively of that in normal tissues. Neurospora crassa wild type 146 (microconidial type) was grown in a modified ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/178148b0
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  • 6
    Electronic Resource
    Electronic Resource
    Effects of Molybdenum and Copper on some Enzymes in Neurospora (1957)
    [s.l.] : Nature Publishing Group
    Nature 180 (1957), S. 555-556 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In a factorial experiment we have determined the effects of copper and molybdenum at deficient, optimal and toxic levels (based on dry-weight yields of the felts) in the basal medium on a range of enzymes in Neurospora. The results show that the effect of molybdenum at toxic levels in depressing ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/180555a0
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  • 7
    Electronic Resource
    Electronic Resource
    A Zinc-Dependent Hexokinase from Neurospora Crassa (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 87-88 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ZINC is known to be important for the utilization of carbohydrates by fungi because less sugar is oxidized when there is a deficiency of the metal1. Apart from aldolase activity which may be reduced in zinc-deficient plants2 there is little information on the effect of zinc-deficiency on enzymes ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179087a0
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  • 8
    Electronic Resource
    Electronic Resource
    A Phosphate Requirement for Nitrate Reductase from Neurospora crassa (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 1474-1475 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This communication reports that further purification of nitrate reductase from N. crassa has shown it to have a requirement for phosphate which can be replaced completely by arsenate, tellurate or selenate and partially so by silicate or sulphate. N. crassa wild type 146 (microconidial type) was ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1781474a0
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  • 9
    Electronic Resource
    Electronic Resource
    Valency Changes of Molybdenum During the Enzymatic Reduction of Nitrate in Neurospora (1955)
    [s.l.] : Nature Publishing Group
    Nature 176 (1955), S. 1066-1067 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MOLYBDENUM has been identified as a con-stituent of nitrate reductase in Neurospora crassa1*2, E. coli3 and in higher plants4. The micro -nutrient undergoes oxidation-reduction changes during nitrate reductase action in the following sequence : flavine adenine Reduced dinucleotide triphospho- ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1761066a0
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  • 10
    Electronic Resource
    Electronic Resource
    Some problems associated with determining iron in plants (1957)
    Springer
    Plant and soil 8 (1957), S. 367-377 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary 1. Iron which is shown to be present as a contaminant on leaf surfaces of tomato can be removed completely by washing the leaves for 30 sec in 0.3% “teepol” and water followed by a 30 sec rinsing in distilled water. 2. By using radioactive iron it is shown that there was no loss of the metal from within the plants during leaf washing. Agreement between chemical and radioassay data for iron showed that the metal was completely removed by the wash procedure. 3. In tomato grown in the glasshouse consistent differences between the iron contents of normal and chlorotic leaves were obtained after leaf washing. When the plants were grown in a dustproof chamber differences in iron status of green and chlorotic leaves were obtained without washing. 4. Added radioactive and carrier iron was fully recovered from acid digests of a variety of plant material, specially chosen to represent a range of silica contents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01666325
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