ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Mouse (Swiss)  (2)
  • Siderophore  (2)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Ferripyoverdine-reductase activity inPseudomonas fluorescens (1989)
    Springer
    BioMetals 2 (1989), S. 18-24 
    Details
    ISSN: 1572-8773
    Keywords: Siderophore ; Reductase ; Iron ; Pseudomonas fluorescens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Enzymatic release of iron from ferripyoverdine through a reductive mechanism was demonstrated in cell-free extracts ofPseudomonas fluorescens. Ferripyoverdine reductase activity was localized primarily in the cytoplasm and/or periplasm and appeared not to be affected by the iron status of the cells. The reaction required a strict anaerobic environment and was fully inhibited by oxygen, whereas NADH was the most effective reductant. Ferripyoverdines from other bacterial sources (P. aeruginosa ATCC 15692,P. fluorescens ATCC 13525,P. fluorescens ATCC 17400) were able to serve as iron sources as well as ferric citrate. However, the activity with ferric citrate was not strongly affected by oxygen and did not display the characteristic lag phase observed with ferripyoverdines, suggesting the occurrence of a specific ferric citrate iron reductase. FMN should play a critical role in the reductive mechanism since it was absolutely required for the activity to occur with an intensively dialyzed cell-free extract, whereas it greatly stimulated (50-fold) the NADH-mediated activity of a crude extract.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01116196
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Structure Elucidation of the Gallium-Ornibactin Complex by 2D-NMR Spectroscopy (1993)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1993 (1993), S. 43-48 
    Details
    ISSN: 0170-2041
    Keywords: Ornibactin ; Siderophore ; Iron complex ; Gallium complex ; Pseudomonas strain TVV 69 ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: From a Pseudomonas strain novel hydroxamate/carboxylate siderophores were isolated which were named ornibactins representing the modified tetrapeptide L-Orn1(Nδ-OH,Nδ-acyl)-D-threo-Asp(β-OH)-L-Ser-L-Orn4(Nδ-OH,N δ-formyl)-1,4-diaminobutane. The side-chain amino function of Orn1(Nδ-OH,Nδ-acyl) is acylated by 3-hydroxyoctanoic acid in the most lipophilic component of the microheterogeneous siderophore mixture. The structure elucidation was based on GC amino acid analysis, GC-MS and electrospray mass spectrometry of the iron complex. The 3-hydroxyoctanoic acid and the primary sequence were established on the basis of 1H and inverse detected 13C two-dimensional NMR spectra (COSY, TOCSY, NOESY, HMQC, HMBC) of the gallium-ornibactin-F complex which allowed the complete assignment of all 1H and 13C signals.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.199319930108
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...