Eukaryotic Cell
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Eukaryotic Cell, April 2006, p. 784-787, Vol. 5, No. 4
1535-9778/06/$08.00+0     doi:10.1128/EC.5.4.784-787.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Cardiolipin in Hydrogenosomes: Evidence of Symbiotic Origin

Ivone de Andrade Rosa,1 Marcelo Einicker-Lamas,2 Róbson Roney Bernardo,3 Lucia Mendonça Previatto,2 Ronaldo Mohana-Borges,2 José Andrés Morgado-Díaz,4 and Marlene Benchimol1*

Laboratório de Ultraestrutura Celular, Universidade Santa Úrsula, Rio de Janeiro, Brazil,1 Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil,2 Faculdade de Farmácia, Universidade Estácio de Sá, Rio de Janeiro, Brazil,3 INCA-Grupo de Biologia Estrutural, Divisão de Biologia Celular, Instituto Nacional de Cancer, Rio de Janeiro, Brazil4

Received 18 November 2005/ Accepted 18 January 2006

Hydrogenosomes are found in organisms that lack typical mitochondria. Cardiolipin is a phospholipid located exclusively in bacterial membranes and the inner membrane of mitochondria. Here we show, by cell fractionation, thin-layer chromatography, high-pressure liquid chromatography, and matrix-assisted laser desorption ionization-time of flight mass spectrometry that hydrogenosomes of Tritrichomonas foetus, a cattle vaginal parasite, contain cardiolipin, which is strong evidence for its endosymbiotic origin.

* Corresponding author. Mailing address: Rua Jornalista Orlando Dantas, 59, CEP 222-31-010, Botafogo, Rio de Janeiro, Brazil. Phone and fax: 55-21-2553-1615. E-mail: marleneben{at}uol.com.br.

Eukaryotic Cell, April 2006, p. 784-787, Vol. 5, No. 4
1535-9778/06/$08.00+0     doi:10.1128/EC.5.4.784-787.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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Appl. Environ. Microbiol. Infect. Immun. J. Bacteriol.
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Copyright © 2006 by the American Society for Microbiology.