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  • LUNAR AND PLANETARY EXPLORATION  (2)
  • Oleandomycin  (1)
  • 1990-1994  (3)
  • 1920-1924
  • 1
    Electronic Resource
    Electronic Resource
    Purification of macrolide 2′-phosphotransferase fromStreptomyces coelicolor Müller (1990)
    Springer
    Journal of industrial microbiology and biotechnology 6 (1990), S. 295-297 
    Details
    ISSN: 1476-5535
    Keywords: Phosphorylation ; Oleandomycin ; Macrolide 2′-phosphotransferase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary An enzyme that catalyzes 2′-O-phosphorylation of oleandomycin and several other macrolide antibiotics has been purified approximately 47-fold from cell-free extracts ofStreptomyces coelicolor Müller, NRRL 3532 (UC™ 5240). The reaction product was verified as being oleandomycin-2′-O-phosphate by mass spectrometry. As a result of purification, the enzyme was separated from two lincosaminide inactivating enzyme activities also present in the cell-free extract.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01575877
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Lunar ferroan anorthosite 60025 - Petrology and chemistry of mafic lithologies (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Eleven splits from the mafic-mineral-rich part of anorthosite 60025 were studied in order to establish the exact nature and causes of compositional variations in the minerals of lunar ferroan anorthosites. All splits were analyzed by INAA, and five were studied intensively by petrologic techniques. All splits were found to have similar cataclastic textures and show textural evidence of at least two episodes of deformation. The whole-rock split contains mafic minerals having a wide range of compositions and is probably polymict. It is suggested that the rare-earth patterns for all splits can be duplicated safactorily, assuming that the equilibrium liquids had flat, or nearly flat, chondrite-normalized rare-earth patterns. The plagioclases in all splits were found to be identical. Data obtained indicate that in ferroan anorthosites An content in plagioclase and mg' of associated mafic minerals are not strongly correlated.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 12, 1990 - Mar 16, 1990; Houston, TX; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Lunar ferroan anorthosites - Mineralogy, compositional variations, and petrogenesis (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Results of a study of 16 samples from the anorthositic ferroan subgroup, or 'typical' ferroan anorthosites, are reported. The presence of heterogeneous, bimodal, and/or trimodal pyroxene compositions suggests that some of the anorthosites are polymict rocks; however, they are composed entirely of ferroan-anorthosite-suite lithologies. It is suggested that complex processes operated during the formation of the ferroan anorthosites. It is argued that original igneous compositional characteristics were altered during and/or after crystallization. Processes operative during anorthosite formation may have included some mixing of different melts, trapping of variable amounts of intercumulus liquid, postcrystallization redistribution of elements, or perturbations both during adcumulus growth and subsequent to crystallization by impact events.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 98; E5; p. 9089-9105.
    Format: text
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    NASA TECHNICAL REPORTS
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