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  • seed storage protein  (2)
  • 25.70  (1)
  • Gene assignment  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Polymorphism of legumin subunits from field bean (Vicia faba L. var. minor) and its relation to the corresponding multigene family (1993)
    Springer
    Theoretical and applied genetics 86 (1993), S. 867-874 
    Details
    ISSN: 1432-2242
    Keywords: cDNA ; Legumin subunits ; Polymorphism ; Gene assignment ; Vicia faba
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Legumin, which amounts to approximately 55% of the seed protein in field beans (Vicia faba L. var. minor), is a representative of the 12S storage globulin family. The 12S storage globulins are hexameric holoprotein molecules composed of different types of polymorphic subunits encoded by a multigene family. ‘Type-A’ legumin subunits contain methionine whereas ‘type-B’ are methionine-free subunits. Sequencing of two different type A-specific cDNAs, as well as an FPLC/HPLC-based improvement of subunit fractionation and peptide mapping with subsequent partial amino-acid sequencing, permit the assignment of some of the polymorphic legumin subunits to members of the multigene family. Two different type A subunits (A1 and A2) correspond to the two different cDNA clones pVfLa129 (A2) and 165 (A1), but microheterogeneity in the amino-acid sequences indicates that polymorphic variants of both representatives of this type may exist. Two groups of published type B-specific gene sequences (LeB7, and LeB2, LeB4, LeB6, respectively) are represented by two polymorphic subunit fractions (B3I, B3II, and B4I, B4II). A seventh clone, LeB3, encodes one of the large legumin subunits that is only a minor component of the legumin seed protein complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212614
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Subthreshold kaon production in Au on Au collisions at 1 GeV/u (1991)
    Springer
    The European physical journal 341 (1991), S. 123-124 
    Details
    ISSN: 1434-601X
    Keywords: 25.70 ; 21.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Subthreshold kaon production in197 Au+197 Au collisions at 1.0 GeV/u has been investigated with the Kaon Spectrometer at SIS. At Θ lab =44±4∘ we found aK +/p ratio of〉3 · 10−4 for the momentum range 650 MeV/c to 1150 MeV/c.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281285
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Narbonin, a novel 2S protein from Vicia narbonensis L. seeds: cDNA, gene structure and developmentally regulated formation (1995)
    Springer
    Plant molecular biology 28 (1995), S. 61-72 
    Details
    ISSN: 1573-5028
    Keywords: biosynthesis ; gene structure ; narbonin ; recombinant protein ; 2S globulin ; seed storage protein ; Victa narbonensis L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract cDNA and genomic clones encoding narbonin, a 2S globulin from the seed of narbon bean (Vicia narbonensis L.), were obtained using the polymerase chain reaction (PCR) and sequenced. The full-length cDNA as well as genomic clones contain a single open reading frame (ORF) of 873 bp that encodes a protein with 291 amino acids comprising the mature narbonin polypeptide (M r ca. 33 100) and an initiation methionine. The deduced amino acid sequence lacks a transient N-terminal signal peptide. The genomic clones do not contain any intron. No homology was found to nucleic acid and protein sequences so far registered in sequence data libraries. The biosynthesis of narbonin during embryogenesis is developmentally-regulated and its pattern of synthesis closely resembles that of typical seed storage globulins. However, during seed germination narbonin was degraded very slowly, indicating that it may have other function than storage protein. Southern analysis suggests the existence of a small narbonin gene family. Narbonin genes were also found in four different species of the genus Vicia as well as in other legumes such as Canavalia ensiformis and Glycine max. In Escherichia coli a recombinant narbonin was produced which yielded crystals like those prepared from narbonin purified from seeds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00042038
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  • 4
    Electronic Resource
    Electronic Resource
    Seed specific expression of the 2S albumin gene from Brazil nut (Bertholletia excelsa) in transgenicVicia narbonensis (1995)
    Springer
    Molecular breeding 1 (1995), S. 295-301 
    Details
    ISSN: 1572-9788
    Keywords: Brazil nut protein, grain legumes, leguminB4 promoter ; seed storage protein ; sulphur amino acid deficiency ; transgenic plants ; Vicia narbonensis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In order to evaluate the possibility of enhancing the sulphur amino acids in grain legumes, we have transferred the gene for the methionine-rich 2S albumin from Brazil nut (Bertholletia excelsa) controlled by a seed-specific promoter intoVicia narbonensis. The coding region of the 2S albumin gene that has been completely synthesized was fused to the seed-specific leguminB4 promoter fromVicia faba. Transgenic lines ofV. narbonensis were generated viaAgrobacterium-mediated gene analysis of leaves, stems, roots and seeds of four R0 plants revealed that the expression of the foreign 2S albumin gene occurred in a seed-specific manner and that the foreign protein is present at levels ranging from 1% to 4.8% of total SDS-soluble seed protein. Since the current protocol for transformation ofV. narbonensis has not yet been published, a detailed description of the method is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02277429
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