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  • Organic Chemistry  (3)
  • ASTROPHYSICS  (2)
  • ATP-sulfurylase-adenosine 5′-phosphosulfate sulfotransferase  (1)
Collection
Keywords
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  • 1
    Electronic Resource
    Electronic Resource
    Localization of enzymes of assimilatory sulfate reduction in pea roots (1989)
    Springer
    Planta 179 (1989), S. 228-234 
    Details
    ISSN: 1432-2048
    Keywords: ATP-sulfurylase-adenosine 5′-phosphosulfate sulfotransferase ; Pisum (sulfate reduction) ; Proplastid ; Sulfite reductase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The localization of enzymes of assimilatory sulfate reduction was examined in roots of 5-d-old pea (Pisum sativum L.) seedlings. During an 8-h period, roots of intact plants incorporated more label from 35SO 4 2- in the nutrient solution into the amino-acid and protein fractions than shoots. Excised roots and roots of intact plants assimilated comparable amounts of radioactivity from 35SO 4 2- into the amino-acid and protein fractions during a 1-h period, demonstrating that roots of pea seedlings at this stage of development were not completely dependent on the shoots for reduced sulfur compounds. Indeed, these roots contained activities of ATP-sulfurylase (EC 2.7.7.4), adenosine 5′-phosphosulfate sulfotransferase, sulfite reductase (EC 1.8.7.1) and O-acetyl-l-serine sulfhydrylase (EC 4.2.99.8) at levels of 50, 30, 120 and 100%, respectively, of that in shoots. Most of the extractable activity of adenosine 5′-phosphosulfate sulfotransferase was detected in the first centimeter of the root tip. Using sucrose density gradients for organelle separation from this part of the root showed that almost 40% of the activity of ATP-sulfurylase, adenosine 5′-phosphosulfate sulfotransferase and sulfite reductase banded with the marker enzyme for proplastids, whereas only approximately 7% of O-acetyl-l-serine sulfhydrylase activity was detected in these fractions. Because their distributions on the gradients were very similar to that of nitrite reductase, a proplastid enzyme, it is concluded that ATP-sulfurylase, adenosine 5′-phosphosulfate sulfotransferase and sulfite reductase are also exclusively or almost exclusively localized in the proplastids of pea roots. O-Acetyl-l-serine sulfhydrylase is predominantly present in the cytoplasm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00393693
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Die Reduktion von α-Aminocarbonsäureestern zu Aminoalkoholen mittels Lithiumaluminiumhydrid (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1617-1623 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reduktion mit Lithiumaluminiumhydrid wurde aus den entsprechenden Estern von α-Aminocarbonsäuren die folgenden Aminoalkohole dargestellt: D, L-Phenylalaninol, L(-)-Phenylalaninol, L(-)-Tyrosinol, L(+)-Alaninol, L(+)-Leucinol, L,(+)-2-Oxymethylpyrrolidin (L(+)-Prolinol), L(+)-2-Aminobutandiol-(1,4) (L(+)-Asparaginol), D, L-2-Aminobutandiol-(1,4) (D, L-Asparaginol) und 2-Amino-propandiol-( 1,3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310624
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    L-Valinol und L-Tyrosinol (1949)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 32 (1949), S. 1156-1157 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reduktion mit Lithiumaluminiumhydrid wurden aus L-Valin-methylester L-Valinol und aus L-Tyrosin-methylester L-Tyrosinol in guten Ausbeuten hergestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19490320374
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  • 4
    Electronic Resource
    Electronic Resource
    L-Histidinol (1949)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 32 (1949), S. 1936-1938 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reduktion von Dibenzoyl-L-histidinmethylester mit LiAlH4 wurden Monobenzoyl-L-histidinol und aus letzterem durch Verseifung L-Histidinol hergestellt. Letztere Verbindung zeigt ähnliche pharmakologische Wirkung wie Histamin, aber erst in 1000-3000 mal höherer Dosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19490320619
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  • 5
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    Cosmogenic rare gases and 10-Be in a cross section of Knyahinya (1986)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The concentrations of cosmogenic nuclides were studied as a function of shielding on samples from a cross section of the 293 kg main fragment of the L5 chondrite Knyahinya. The stone broke into two nearly symmetrical parts upon its fall in 1866. The planar cross section has diameters between 40 and 55 cm. He, Ne, and Ar were measured on about 20 samples by mass spectrometry and the 10-Be activities on aliquots of 10 selected samples were determined by AMS. The 10-Be data are presented and the abundances of spallogenic nuclides are compared with the model calculations reported by Reedy for spherical L chondrites. The 10-Be production rates in Knyahinya are shown versus the shielding parameter 22-Ne/21-Ne.
    Keywords: ASTROPHYSICS
    Type: Lunar and Planetary Inst. Workshop on Cosmogenic Nuclides; 1 p
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Studies on cosmogenic nuclides in meteorites with regard to an application as potential depth indicators (1986)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Measurements of stable and radioactive spallation products in meteorites allow to investigate their histories, especially with respect to the exposure to galactic cosmic ray particles and the pre-atmospheric size of the object. While the concentrations of spallation products lead to the determination of exposure and terrestrial ages, production rate ratios are characteristic for the location of the sample in the meteorite. So, one of the aims of this investigation on meteorites is to obtain depth indicators from suitable pairs of cosmogenic nuclides. Because of the different depth profiles for nuclide productions it is necessary to determine the concentrations of a larger number of spallation products in aliquots of a single small sample. Such same sample measurements of Be-10 and light noble gases were performed on 15 ordinary chondrites (7 H- and 8 L-chondrites. Be-10 was determined by accelerator mass spectrometry and the noble gases were measured by static mass spectrometry. The results are summarized and discussed.
    Keywords: ASTROPHYSICS
    Type: Lunar and Planetary Inst. Workshop on Cosmogenic Nuclides; 3 p
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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