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Fe(III)-complexes of the tripodal trishydroxamate siderophore basidiochrome: potential biological implications.

Publication ,  Journal Article
Harrington, JM; Winkelmann, G; Haselwandter, K; Crumbliss, AL
Published in: Journal of inorganic biochemistry
December 2011

One method of mobilization of iron by mycorrhizal organisms is through the secretion of small organic chelators called siderophores. Hydroxamate donor chelators are a common type of siderophore that is frequently used by fungal organisms. The primary siderophore that is produced by fungi from the genera Ceratobasidium and Rhizoctonia is the tripodal trishydroxamate siderophore basidiochrome. To gain some insight into the iron uptake mechanisms of these symbiotic fungi, the iron binding characteristics of basidiochrome were determined. It was found that basidiochrome exhibits a log β(110) of 27.8±0.1 and a pFe value of 25.0. These values are similar to those of another fungal trishydroxamate siderophore, ferrichrome. The similarity in iron affinity between the two siderophores suggests that the structure of the backbone has little influence in complex formation due to the length of the pendant arms, although the identity of the terminating groups of the pendant arms is likely related to complex stability. The role of basidiochrome in the biogeochemical cycling of iron is also discussed.

Duke Scholars

Published In

Journal of inorganic biochemistry

DOI

EISSN

1873-3344

ISSN

0162-0134

Publication Date

December 2011

Volume

105

Issue

12

Start / End Page

1670 / 1674

Related Subject Headings

  • Titrimetry
  • Spectrophotometry, Ultraviolet
  • Siderophores
  • Peptides, Cyclic
  • Orchidaceae
  • Mycorrhizae
  • Iron
  • Inorganic & Nuclear Chemistry
  • Hydroxamic Acids
  • Hydrogen-Ion Concentration
 

Citation

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Harrington, J. M., Winkelmann, G., Haselwandter, K., & Crumbliss, A. L. (2011). Fe(III)-complexes of the tripodal trishydroxamate siderophore basidiochrome: potential biological implications. Journal of Inorganic Biochemistry, 105(12), 1670–1674. https://doi.org/10.1016/j.jinorgbio.2011.08.010
Harrington, James M., Günther Winkelmann, Kurt Haselwandter, and Alvin L. Crumbliss. “Fe(III)-complexes of the tripodal trishydroxamate siderophore basidiochrome: potential biological implications.Journal of Inorganic Biochemistry 105, no. 12 (December 2011): 1670–74. https://doi.org/10.1016/j.jinorgbio.2011.08.010.
Harrington JM, Winkelmann G, Haselwandter K, Crumbliss AL. Fe(III)-complexes of the tripodal trishydroxamate siderophore basidiochrome: potential biological implications. Journal of inorganic biochemistry. 2011 Dec;105(12):1670–4.
Harrington, James M., et al. “Fe(III)-complexes of the tripodal trishydroxamate siderophore basidiochrome: potential biological implications.Journal of Inorganic Biochemistry, vol. 105, no. 12, Dec. 2011, pp. 1670–74. Epmc, doi:10.1016/j.jinorgbio.2011.08.010.
Harrington JM, Winkelmann G, Haselwandter K, Crumbliss AL. Fe(III)-complexes of the tripodal trishydroxamate siderophore basidiochrome: potential biological implications. Journal of inorganic biochemistry. 2011 Dec;105(12):1670–1674.
Journal cover image

Published In

Journal of inorganic biochemistry

DOI

EISSN

1873-3344

ISSN

0162-0134

Publication Date

December 2011

Volume

105

Issue

12

Start / End Page

1670 / 1674

Related Subject Headings

  • Titrimetry
  • Spectrophotometry, Ultraviolet
  • Siderophores
  • Peptides, Cyclic
  • Orchidaceae
  • Mycorrhizae
  • Iron
  • Inorganic & Nuclear Chemistry
  • Hydroxamic Acids
  • Hydrogen-Ion Concentration