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  • Analytical Chemistry and Spectroscopy  (2)
  • Erwinia chrysanthemi  (2)
  • Ferritin  (1)
  • Iron regulation  (1)
Source
Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    A brief history of iron metabolism (1991)
    Springer
    BioMetals 4 (1991), S. 1-6 
    Details
    ISSN: 1572-8773
    Keywords: Cell respiration ; Cytochromes ; Ferritin ; Transferrin receptor ; Siderophores
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary A concise history of selected aspects of iron metabolism is presented. According to present understanding, the element is known to be required for transport and reduction of O2, for reduction Of CO2, N2 and ribonucleotides, and for other essential cellular processes. The contributions of pioneers in the field, preeminent among them the cell physiologist and biochemist Otto Warburg, are recounted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01135550
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Iron(III) complexes of chrysobactin, the siderophore ofErwinia chrysanthemi (1992)
    Springer
    BioMetals 5 (1992), S. 29-36 
    Details
    ISSN: 1572-8773
    Keywords: Erwinia chrysanthemi ; chrysobactin ; catechol ; iron complex ; coordination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The phytopathogenic bacteriumErwinia chrysanthemi produces the monocatecholate siderophore chrysobactin under conditions of iron deprivation. Only the catecholate hydroxyl groups participate in metal coordination, and chrysobactin is therefore unable to provide full 1:1 coordination of Fe(III). The stoichiometry in aqueous solution is a variable dependent on pH and metal/ligand ratio, in addition to being concentration dependent. At neutral pH and concentrations of about 0.1mm, ferric chrysobactin exists as a mixture of bis and tris complexes. Chrysobactin and its isomers form optically active tris complexes. The dominant configuration depends on the chirality of the amino acid to which the catecholate moiety is attached.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01079695
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Expression, isolation and properties of Fur (ferric uptake regulation) protein ofEscherichia coli K 12 (1988)
    Springer
    BioMetals 1 (1988), S. 62-68 
    Details
    ISSN: 1572-8773
    Keywords: Fur repressor ; Iron regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary The clonedfur (ferric uptake regulation) gene ofEscherichia coli K12 was ligated to an expression vector which was inducible with nalidixic acid. The Fur protein was isolated in a single step by immobilized metal-ion-affinity chromatography over zinc iminodiacetate agarose. The amino acid composition of the isolated protein agreed with that predicted from the gene sequence and indicated post-transcriptional removal of the N-terminal methionine residue. All four cysteines were shown to be present as thiols. Proteolysis with trypsin and chymotrypsin yielded large fragments identifiable on polyacrylamide gel electrophoresis. Various divalent metal ions were found by a nitrocellulose filter binding assay to effect non-specific interaction of the Fur dimer with DNA with a dissociation constant of 7 × 10−12 M. A much smaller value, 2.5 × 10−17 M, was measured by gel mobility retardation assay for binding of Fur to a DNA fragment containing the operator sequences of the aerobactin promoter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01128019
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The requirement of chrysobactin dependent iron transport for virulence incited by Erwinia chrysanthemi on Saintpaulia ionantha (1991)
    Springer
    Plant and soil 130 (1991), S. 263-271 
    Details
    ISSN: 1573-5036
    Keywords: bacteria ; Erwinia chrysanthemi ; iron transport ; phytopathogenicity ; Saintpaulia ionantha ; virulence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract To incite a systemic disease on its specific host, Saintpaulia ionantha, the soft-rot Erwinia chrysanthemi strain 3937 requires a functional high affinity iron transport system. Under iron starvation, strain 3937 produces chrysobactin, a novel catechol-type siderophore. Recent advances in the biochemistry and genetics of iron assimilation in E. chrysanthemi are reported. Analysis of leaf intercellular fluid from healthy and infected plants suggests: (i) leaf vessels in which the bacteria develop during infection would be low in free iron and (ii) chrysobactin could be produced in planta.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011882
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Mass spectroscopy of hydroxamic acids: Fragmentation by the loss of the hydroxylamino oxygen (1975)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 10 (1975), S. 259-262 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mass spectra of three dihydroxamic acids have shown in each case prominent [M - 16]+· and [M - 32]+· ions. The spectrum of biosynthetically labeled rhodotorulic acid indicates that these ions arise from the sequential, specific loss of the hydroxylamino oxygens.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210100404
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Field desorption and fast atom bombardment mass spectrometry of hydroxamate containing siderophores (1982)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 9 (1982), S. 158-161 
    Details
    ISSN: 0306-042X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Field desorption and fast atom bombardment mass spectrometric procedures have been applied to the analysis of hydroxamate containing siderophores as their iron (III) complexes. Molecular ion species predominate in both field desorption and fast atom bombardment spectra. The results reported demonstrate the potential of these soft ionization techniques for the characterization of novel siderophores and siderophores metabolites.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200090406
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    Paper (German National Licenses)
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