Studies on iron metabolism in Neurospora crassa

Padmanaban, G. ; Sarma, P. S. (1965) Studies on iron metabolism in Neurospora crassa Archives of Biochemistry and Biophysics, 111 (1). pp. 147-152. ISSN 0003-9861

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Neurospora crassa Em 5297a secretes an ironbinding compound (X) when grown under conditions of iron deficiency. Decreasing the concentration of iron in the medium results in an increase of X and a corresponding fall in catalase activity. Under iron-deficient conditions the production of X precedes the fall in catalase activity. The iron complex of the iron-binding compound (XFe) can act as a good iron source to the organism to maintain normal growth and catalase activity, even though the iron is held very firmly in the chemical sense. While ferrichrome is as potent as XFe, as an iron source to N. crassa, ferrichrome A and ferric acethydroxamate are only partially beneficial. XFe, when provided as the sole iron source, also influences nonheme iron enzyme activities like succinic dehydrogenase and aconitase. XFe is permeable to N. crassa mycelia and is incorporated at a much faster rate compared with that from a simple chelate such as ferric citrate.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:33659
Deposited On:18 Apr 2011 13:58
Last Modified:17 Jul 2012 07:14

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