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  • 1
    Digitale Medien
    Digitale Medien
    Evaluation for collagen products for cosmetic application (2004)
    Oxford, UK : Blackwell Science Ltd
    International journal of cosmetic science 26 (2004), S. 0 
    Details
    ISSN: 1468-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Collagen is an important component for cosmetic formulation, where it is an effective natural humectant with high substantivity. Commercial collagen preparations have a wide range of properties. In the present study, various techniques have been used to examine three distinct commercial collagens that illustrate the range of properties that are available. The usefulness of the various techniques for assessing collagen quality and batch-to-batch variation is discussed. The results indicate that there are several simple, cheap and effective methods such as gel electrophoresis that provide excellent information on collagen quality. The appropriate selection of tests allows informed decisions on the choice of which collagen preparation to use in providing the desired functionality and shelf life of a formulation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1467-2494.2004.00245_2.x
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  • 2
    Digitale Medien
    Digitale Medien
    Higher Plant Cytochrome c (1970)
    [s.l.] : Nature Publishing Group
    Nature 228 (1970), S. 552-554 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] There are two principal methods for the mathematical treatment of sequence data from a large number of species3'4. The matrix method (for example ref. 5) is used to construct a tree so that the reconstructed matrix derived from it is the closest approximation to the original matrix obtained from ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/228552a0
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  • 3
    Digitale Medien
    Digitale Medien
    X-ray crystal structure analysis of plastocyanin at 2.7 Å resolution (1978)
    [s.l.] : Nature Publishing Group
    Nature 272 (1978), S. 319-324 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The three-dimensional structure of plastocyanin, a ‘blue’ or ‘Type 1’ copper-protein, has been determined at a resolution of 2.7 Å. The copper atom has a highly distorted tetrahedral coordination geometry. It is coordinated by a cysteine thiol group, a methionine ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/272319a0
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Structural analysis of glycerol-3-phosphate dehydrogenase from severalDrosophila species (1985)
    Springer
    Biochemical genetics 23 (1985), S. 801-814 
    Details
    ISSN: 1573-4927
    Schlagwort(e): Drosophila melanogaster ; D. hydei ; D. immigrans ; D. mercatorum ; glycerol-3-phosphate dehydrogenase ; peptide mapping ; amino acid sequencing
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract This report describes preliminary protein structural studies of glycerol-3-phosphate dehydrogenase (α-GPDH) fromDrosophila spp. and an important innovative feature of our enzyme purification protocol. The scheme involves the coupling of substrate (α-glycerophosphate) elution from CM-Sephadex and cofactor (NADH) elution from Affi-Gel blue resin. Using this method a 32.7% yield and a 111-fold purification were obtained from aD. melanogaster line carrying the α-Gpdh S allele at the α-Gpdh locus. The product obtained from 0 to 3-day-old adult flies was electrophoretically homogeneous and consisted mainly of the adult α-GPDH-1 isozyme. The method was used to obtain α-GPDH protein fromD. melanogaster (two lines),D. hydei, D. immigrans, andD. mercatorum. Peptide mapping revealed structural differences among the enzymes from the different species, and amino acid sequencing showed many similarities betweenD. melanogaster α-GPDH and the rabbit muscle enzyme.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00554089
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  • 5
    Digitale Medien
    Digitale Medien
    Structural analysis of glycerol-3-phosphate dehydrogenase from severalDrosophila species (1985)
    Springer
    Biochemical genetics 23 (1985), S. 801-814 
    Details
    ISSN: 1573-4927
    Schlagwort(e): Drosophila melanogaster ; D. hydei ; D. immigrans ; D. mercatorum ; glycerol-3-phosphate dehydrogenase ; peptide mapping ; amino acid sequencing
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract This report describes preliminary protein structural studies of glycerol-3-phosphate dehydrogenase (α-GPDH) fromDrosophila spp. and an important innovative feature of our enzyme purification protocol. The scheme involves the coupling of substrate (α-glycerophosphate) elution from CM-Sephadex and cofactor (NADH) elution from Affi-Gel blue resin. Using this method a 32.7% yield and a 111-fold purification were obtained from aD. melanogaster line carrying the α-Gpdh S allele at the α-Gpdh locus. The product obtained from 0 to 3-day-old adult flies was electrophoretically homogeneous and consisted mainly of the adult α-GPDH-1 isozyme. The method was used to obtain α-GPDH protein fromD. melanogaster (two lines),D. hydei, D. immigrans, andD. mercatorum. Peptide mapping revealed structural differences among the enzymes from the different species, and amino acid sequencing showed many similarities betweenD. melanogaster α-GPDH and the rabbit muscle enzyme.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02399410
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