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FEBS Lett. 1999 Apr 16;449(1):17-22.

A revised model of the active site of alternative oxidase.

Author information

1
Department of Biochemistry, Stockholm University, Sweden.

Abstract

The plant mitochondrial protein alternative oxidase catalyses dioxygen dependent ubiquinol oxidation to yield ubiquinone and water. A structure of this protein has previously been proposed based on an assumed structural homology to the di-iron carboxylate family of proteins. However, these authors suggested the protein has a very different topology than the known structures of di-iron carboxylate proteins. We have re-examined this model and based on comparison of recent sequences and structural data on di-iron carboxylate proteins we present a new model of the alternative oxidase which allows prediction of active site residues and a possible membrane binding motif.

PMID:
10225419
[Indexed for MEDLINE]
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