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Crystallization and Preliminary X-ray Diffraction Studies of the ISC-like [2Fe-2S] Ferredoxin (FdxB) from Pseudomonas Putida JCM 20004

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Date 2007 Dec 18
PMID 18084081
Citations 1
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Abstract

The iron-sulfur (Fe-S) cluster-biosynthesis (ISC) system of the gamma-proteobacterium Pseudomonas putida JCM 20004 contains a constitutively expressed vertebrate-type [2Fe-2S] ferredoxin, FdxB, which lacks the conserved free cysteine residue near the Fe-S cluster site that has been proposed to function in the catalysis of biological Fe-S cluster assembly in other bacterial homologues. Recombinant FdxB was heterologously overproduced in Escherichia coli, purified and crystallized in its oxidized form by the hanging-drop vapour-diffusion and streak-seeding methods using 1.6 M trisodium citrate dihydrate pH 6.5. The thin needle-shaped crystals diffract to 1.90 A resolution and belong to the hexagonal space group P6(1)22, with unit-cell parameters a = 87.58, c = 73.14 A. The asymmetric unit contains one protein molecule.

Citing Articles

ISC-like [2Fe-2S] ferredoxin (FdxB) dimer from Pseudomonas putida JCM 20004: structural and electron-nuclear double resonance characterization.

Iwasaki T, Kappl R, Bracic G, Shimizu N, Ohmori D, Kumasaka T J Biol Inorg Chem. 2011; 16(6):923-35.

PMID: 21647778 DOI: 10.1007/s00775-011-0793-8.

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