Mössbauer Effect Study of the State of Iron in Spinach Ferredoxin View Full Text


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Article Info

DATE

1968-02

AUTHORS

C. E. JOHNSON, D. O. HALL

ABSTRACT

THE ferredoxins are an important group of enzymes which catalyse photochemical reactions in plants and photosynthetic bacteria. They contain non-haem iron which is believed to be close to the active centre but which is in a chemical form 0which has not been unambiguously determined. Spinach ferredoxin is one of the simpler of these compounds, has a molecular weight of about 12,000 and contains two iron atoms/molecule. A Mössbauer study on this system has been made by Bearden and Moss1, and on other non-haem iron proteins by several groups2–4. In this communication, we describe Mössbauer effect measurements made both in the presence and absence of a magnetic field on spinach ferredoxin, and it is concluded that the iron atoms are both low-spin Fe2+ in the oxidized state, and there is one low-spin Fe2+ and one high-spin Fe2+ in the reduced state. More... »

PAGES

446-448

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/217446a0

DOI

http://dx.doi.org/10.1038/217446a0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052873808

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/5641756


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