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The Striking Case of Tryptophan Provision in the Cedar Aphid Cinara Cedri

Overview
Journal J Bacteriol
Specialty Microbiology
Date 2008 Jul 1
PMID 18586942
Citations 48
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Abstract

Buchnera aphidicola BCc has lost its symbiotic role as the tryptophan supplier to the aphid Cinara cedri. We report the presence of a plasmid in this endosymbiont that contains the trpEG genes. The remaining genes for the pathway (trpDCBA) are located on the chromosome of the secondary endosymbiont "Candidatus Serratia symbiotica." Thus, we propose that a symbiotic consortium is necessary to provide tryptophan.

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