Mutagenesis of the proposed iron-sulfur cluster binding ligands in Escherichia coli biotin synthase


Hewitson, K. S., Baldwin, J. E., Shaw, N. M. and Roach, P. L. (2000) Mutagenesis of the proposed iron-sulfur cluster binding ligands in Escherichia coli biotin synthase. Febs Letters, 466, (2-3), 372-376. (doi:10.1016/S0014-5793(00)01101-7).

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Description/Abstract

Biotin synthase (BioB) is a member of a family of enzymes that includes anaerobic ribonucleotide reductase and pyruvate formate lyase activating enzyme. These enzymes all use S-adenosylmethionine during turnover and contain three highly conserved cysteine residues that may act as ligands to an iron-sulfur cluster required for activity. Three mutant enzymes of BioB have been made, each with one cysteine residue (C53, 57, 60) mutated to alanine, All three mutant enzymes were inactive, hut they still exhibited the characteristic UV-visible spectrum of a [2Fe-2S](2+) cluster similar to that of the wild-type enzyme. (C) 2000 Federation of European Biochemical Societies.

Item Type: Article
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Keywords: biotin synthase, iron-sulfur cluster, mutagenesis of iron-sulfur cluster ligands-adenosylmethionine, 2fe-2s, protein, quantitation, ferredoxin, conversion, 4fe-4s, form
Subjects: Q Science
Q Science > QD Chemistry
Divisions: University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 18958
Date Deposited: 19 Jan 2006
Last Modified: 27 Mar 2014 18:08
URI: http://eprints.soton.ac.uk/id/eprint/18958

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