Abstract.
Previously it has been shown that the prokaryotic endosymbiont (Buchnera) of the aphid Diuraphis noxia contains a plasmid consisting of one copy of the gene for anthranilate synthase (trpEG) and seven trpEG pseudogenes. In the present communication we show that this endosymbiont contains the remaining genes of the tryptophan biosynthetic pathway [trpDC(F)BA] which appear to be functional in that they code for the complete enzyme proteins and are not pseudogenes. As in the case of Buchnera from other endosymbionts, these genes appear to be organized as one transcription unit and are located on the endosymbiont chromosome.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 29 December 1997 / Accepted: 9 January 1998
Rights and permissions
About this article
Cite this article
Baumann, L., Baumann, P. & Moran, N. News & Notes: The Endosymbiont (Buchnera) of the Aphid Diuraphis noxia Contains All the Genes of the Tryptophan Biosynthetic Pathway. Curr Microbiol 37, 58–59 (1998). https://doi.org/10.1007/s002849900337
Issue Date:
DOI: https://doi.org/10.1007/s002849900337