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  • siderophore  (4)
  • Mouse (Swiss)  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    S, S-rhizoferrin (enantio-rhizoferrin) – a siderophore of Ralstonia (Pseudomonas) pickettii DSM 6297 – the optical antipode of R, R-rhizoferrin isolated from fungi (1999)
    Springer
    BioMetals 12 (1999), S. 189-193 
    Details
    ISSN: 1572-8773
    Keywords: Ralstonia pickettii ; rhizoferrin ; siderophore ; iron transport
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract From the culture medium of Ralstonia (formerly Burkholderia or Pseudomonas) pickettii DSM 6297 grown under iron-limited conditions an iron complexing compound (siderophore) could be isolated. The structure of the isolated polycarboxylate siderophore was determined by spectroscopic methods as S,S-rhizoferrin, the enantiomer of R,R-rhizoferrin produced by fungi (Zygomycetes). Transport experiments with radiolabelled iron using S,S- and R,R-rhizoferrin showd no differences in the bacterial Ralstonia strain, while transport of R,R-rhizoferrin was superior in the producing fungal Rhizopus strain, suggesting stereoselective recognition in the fungus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009259118034
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  • 2
    Electronic Resource
    Electronic Resource
    A pyoverdine from Pseudomonas putida CFML 90-51 with a Lys ε-amino link in the peptide chain (2000)
    Springer
    BioMetals 13 (2000), S. 147-152 
    Details
    ISSN: 1572-8773
    Keywords: Pseudomonas putida ; pyoverdin ; siderophore
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract From Pseudomonas putida CFML 90-51 – a hospital isolate – a pyoverdine was obtained which is characterized by the unusual linkage by the ε-rather than the α-amino group of Lys in the peptide chain. The structure elucidation by spectroscopic methods and degradation reactions is reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009212729408
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  • 3
    Electronic Resource
    Electronic Resource
    Ornibactin production and transport properties in strains of Burkholderia vietnamiensis and Burkholderia cepacia (formerly Pseudomonas cepacia) (1995)
    Springer
    BioMetals 8 (1995), S. 309-317 
    Details
    ISSN: 1572-8773
    Keywords: Burkholderia ; Pseudomonas ; ornibactin ; siderophore ; iron metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Several strains of Burkholderia vietnamiensis, isolated from the rhizosphere of rice plants, and four strains formerly known as Pseudomonas cepacia including two collection strains and two clinical isolates were compared for siderophore production and iron uptake. The B. vietnamiensis (TVV strains) as well as the B. cepacia strains (ATCC 25416 and ATCC 17759) and the clinical isolates K132 and LMG 6999 were all found to produce ornibactins under iron starvation. The two ATCC strains of B. cepacia additionally produced the previously described siderophores, pyochelin and cepabactin. Analysis of the ratio of isolated ornibactins (C4, C6 and C8) by HPLC revealed nearly identical profiles. Supplementation of the production medium with ornithine (20 mm) resulted in a 2.5-fold increase in ornibactin synthesis. Ornibactin-mediated iron uptake was independent of the length of the acyl side chain and was observed with all strains of B. vietnamiensis and B. cepacia, but was absent with strains of Pseudomonas aeruginosa, Pseudomonas fluorescens and Pseudomonas stutzeri, known to produce pyoverdines or desferriferrioxamines as siderophores. These results suggest that ornibactin production is a common feature of all Burkholderia strains and that these strains develop an ornibactin-specific iron transport system which is distinct from the pyoverdine-specific transport in Pseudomonas strains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00141604
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  • 4
    Electronic Resource
    Electronic Resource
    The structure of a pyoverdine from Pseudomonas sp. CFML 96.188 and its relation to other pyoverdines with a cyclic C-terminus (2000)
    Springer
    BioMetals 13 (2000), S. 301-309 
    Details
    ISSN: 1572-8773
    Keywords: Pseudomonas ; iron uptake ; pyoverdine ; siderophore
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract From Pseudomonas sp. CFML 96.188 a pyoverdine was isolated and its primary structure was elucidated by spectroscopic methods and degradation reactions. This strain is of interest as it accepts the structurally different pyoverdines from several other Pseudomonas strains. They all have in common as a specific structural feature a C-terminal cyclic substructure, the importance of which for the recognition of a pyoverdine at the cell surface of a given strain will be discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009235421503
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  • 5
    Electronic Resource
    Electronic Resource
    Cultured incisors display major modifications in basal lamina deposition without further effect on odontoblast differentiation (1995)
    Springer
    Cell & tissue research 279 (1995), S. 135-147 
    Details
    ISSN: 1432-0878
    Keywords: Odontoblasts ; Differentiation ; Basal lamina ; Organ culture ; Molar ; Incisor ; Mouse (Swiss)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Matrix-mediated epithelio-mesenchymal interactions play a crucial role in the control of dental cytodifferentiations. Ultrastructural observation of the epithelio-mesenchymal junction in cultured embryonic mouse molars showed discrete zones with duplicated or multilayered basal laminae. The use of synthetic peptides demonstrated that the process was RGD*-independent, did not involve the YIGSR* sequence present on laminin and could occur spontaneously. Cultured incisors showed a similar but much more dramatic multiplication of the basal lamina. Furthermore, the deposition of multilayered basal laminae was specific for the labial aspect of the tooth and could be detected after 6 h of culture. Despite these alterations, preodontoblasts differentiated and gradients of differentiation were maintained, suggesting that among basement membrane constituents, the basal lamina itself does not play a critical role. More important is the inner dental epithelium which may still control odontoblast differentiation by means of diffusible molecules able to reach surface receptors expressed by preodontoblasts or matrix receptors underlying the basal lamina. Gradients of odontoblast differentiation could result from a progressive acquisition of competence by preodontoblasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300700
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  • 6
    Electronic Resource
    Electronic Resource
    Cultured incisors display major modifications in basal lamina deposition without further effect on odontoblast differentiation (1994)
    Springer
    Cell & tissue research 279 (1994), S. 135-147 
    Details
    ISSN: 1432-0878
    Keywords: Key words: Odontoblasts ; Differentiation ; Basal lamina ; Organ culture ; Molar ; Incisor ; Mouse (Swiss)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Matrix-mediated epithelio-mesenchymal interactions play a crucial role in the control of dental cytodifferentiations. Ultrastructural observation of the epithelio-mesenchymal junction in cultured embryonic mouse molars showed discrete zones with duplicated or multilayered basal laminae. The use of synthetic peptides demonstrated that the process was RGD*-independent, did not involve the YIGSR* sequence present on laminin and could occur spontaneously. Cultured incisors showed a similar but much more dramatic multiplication of the basal lamina. Furthermore, the deposition of multilayered basal laminae was specific for the labial aspect of the tooth and could be detected after 6 h of culture. Despite these alterations, preodontoblasts differentiated and gradients of differentiation were maintained, suggesting that among basement membrane constituents, the basal lamina itself does not play a critical role. More important is the inner dental epithelium which may still control odontoblast differentiation by means of diffusible molecules able to reach surface receptors expressed by preodontoblasts or matrix receptors underlying the basal lamina. Gradients of odontoblast differentiation could result from a progressive acquisition of competence by preodontoblasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004410050270
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