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  • Title: A novel, anaerobically induced ferredoxin in Chlamydomonas reinhardtii.
    Author: Jacobs J, Pudollek S, Hemschemeier A, Happe T.
    Journal: FEBS Lett; 2009 Jan 22; 583(2):325-9. PubMed ID: 19101555.
    Abstract:
    We have found the transcript of one of at least six ferredoxin encoding genes of the green alga Chlamydomonas reinhardtii, FDX5, strongly accumulating in anaerobiosis, indicating a vital role of the encoded protein in the anaerobic metabolism of the cells. According to absorption and electron paramagnetic resonance spectroscopy, Fdx5 is a plant-type [2Fe2S]-ferredoxin with a redox potential similar to that of the ferredoxin PetF. However, although Fdx5 seems to be located in the chloroplast, it is not able to photoreduce nicotinamide adenine dinucleotide phosphate (NADP(+)) via ferredoxin-NADP-reductase, nor to be an electron donor to the plastidic [FeFe]-hydrogenase HydA1. Thus, Fdx5 seems to have a special role in a yet to be identified anaerobic pathway.
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