6533b82bfe1ef96bd128cf06
RESEARCH PRODUCT
Molecular characterization of the leucine cluster in Buchnera PSY, primary endosymbiont of the aphid Pemphigus spyrothecae
Roeland C. H. J. Van HamAmparo LatorreFrancisco J. SilvaBeatriz Sabater-muñozLaura Gomez-valerosubject
DNA BacterialSubfamilyMolecular Sequence DataPemphigus spyrothecaeApplied Microbiology and Biotechnologysymbiotic bacteriaPlasmidBacterial ProteinsBuchneraLeucineplasmidGene clusterevolutionInvertebrate MicrobiologyAnimalsgeneticsCloning MolecularSymbiosisGeneHydro-LyasesGeneticsBase SequenceEcologybiologyStrain (chemistry)Gene Amplificationbiochemical phenomena metabolism and nutritionbiology.organism_classificationPRI BioscienceMultigene FamilyLeucinebiosynthesisBuchneraPemphigusFood ScienceBiotechnologyanthranilate synthase trpegdescription
ABSTRACT Buchnera strains from most aphid subfamilies studied to date have been found to carry the leucine gene cluster ( leuA , - B , - C , and - D ) on a plasmid, an organization unique among bacteria. Here, however, we demonstrate a classical chromosomal location of the cluster in Buchnera sp. strain PSY from the aphid Pemphigus spyrothecae (subfamily Pemphiginae). The genes that flank leuABCD in Buchnera sp. strain PSY appear to be adjacent in the genome of Buchnera sp. strain APS, a strain carrying a leucine plasmid. We propose that the presence of a leucine plasmid predates the diversification of symbiotic Buchnera and that the chromosomal location observed in Buchnera sp. strain PSY arose by a transfer of the leucine genes from a plasmid to the chromosome.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-05-01 | Applied and Environmental Microbiology |