title: Endosymbiosis: bacteria sharing the load.
abstract: A nested set of bacterial endosymbionts within mealybug cells collectively provides amino acids to their host, but their genomes show that some pathways are distributed between both endosymbionts, while other essential proteins are missing altogether. The possibility that additional functions are shared between partners warrants comparisons with organelles.
authors.affiliation: Canadian Institute for Advanced Research, Botany Department, University of British Columbia, 3529-6270 University Boulevard, Vancouver, BC, V6T 1Z4, Canada. pkeeling@mail.ubc.ca
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: Keeling
mesh_terms: D000818:Animals; D020562:Betaproteobacteria / Q000378:metabolism*; D020563:Gammaproteobacteria / Q000378:metabolism* / Q000472:pathogenicity*; D006430:Hemiptera / Q000378:metabolism* / Q000382:microbiology*; D053858:Metabolic Networks and Pathways; D013559:Symbiosis