Horizontal transfer of two operons coding for hydrogenases between bacteria and archaea. - Archive ouverte HAL Access content directly
Journal Articles Journal of Molecular Evolution Year : 2005

Horizontal transfer of two operons coding for hydrogenases between bacteria and archaea.

A. Calteau

Abstract

Using a phylogenetic approach, we discovered three putative horizontal transfers between bacterial and archaeal species involving large clusters of genes. One transfer involves an operon of 13 genes, called mbx, which probably was transferred into the genome of Thermotoga maritima from a species belonging or close to the Pyrococcus genus. The two others implied an operon of six genes, called ech, transferred independently to the genomes of Thermoanaerobacter tengcongensis and Desulfovibrio gigas, from a species belonging or close to the Methanosarcina genus. All these transfers affected operons coding for multisubunit membrane-bound (NiFe) hydrogenases involved in the energy metabolism of the donor genomes. The functionality of the transferred operons has not been experimentally demonstrated for T. maritima, whereas in D. gigas and T. tengcongensis the encoded multisubunit hydrogenase could have a role in energy conservation. This report adds several cases of horizontal gene transfers among hydrogenases already described.

Dates and versions

hal-00427722 , version 1 (28-10-2009)

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A. Calteau, Manolo Gouy, G. Perrière. Horizontal transfer of two operons coding for hydrogenases between bacteria and archaea.. Journal of Molecular Evolution, 2005, 60 (5), pp.557-65. ⟨10.1007/s00239-004-0094-8⟩. ⟨hal-00427722⟩
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