Pre_GI Gene

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Host: NC_004061 NEIGHBOURS BLASTN Download Island sequence Download Island gene sequence(s)

NC_004061:31500 Buchnera aphidicola str. Sg (Schizaphis graminum), complete genome

Host Lineage: Buchnera aphidicola; Buchnera; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria

General Information: This strain is the symbiont of the aphid Schizaphis graminum and contains a large circular chromosome. Aphid endosymbiont. Almost all aphids contain maternally transmitted bacteriocyte cells, which themselves contain bacteria called Buchnera. The aphids live on a restricted diet (plant sap), rich in carbohydrates, but poor in nitrogenous or other essential compounds. It is believed that the Buchnera provide the essential nutrients the host lacks. Besides a nutritional co-dependence, due to a co-existence of millions of years, Buchnera have lost the ability to produce cell surface components such as lipopolysaccharides. This makes for an obligate endosymbiont relationship between host and Buchnera. Buchnera are prokaryotic cells which belong to the gamma-Proteobacteria, closely related to the Enterobacteriaceae family. Phylogenetic studies using 16S rRNA indicate that the symbiotic relationship was established around 200-250 million years ago. Since Buchnera are closely related to Escherichia coli and Haemophilus influenzae, comparative genomic studies can shed light on the evolutionary mechanisms of intracellular endosymbiosis as well as the different underlying molecular basis between organisms with parasitic behavior and symbionts.

This island contains ribosomal proteins or RNA related elements and may indicate a False Positive Prediction!

StartEndLengthCDS descriptionQuickGO ontologyBLASTP
315323380522745-methyltetrahydropteroyltriglutamate-- homocysteine methyltransferaseQuickGO ontologyBLASTP
33999355791581bifunctional purine biosynthesis proteinQuickGO ontologyBLASTP
3572135993273DNA-binding protein hu-alphaQuickGO ontologyBLASTP
36463407044242DNA-directed RNA polymerase beta subunitQuickGO ontologyBLASTP
40773448014029DNA-directed RNA polymerase beta chainQuickGO ontologyBLASTP
450074539639050S ribosomal protein L7L12QuickGO ontologyBLASTP
454464594349850S ribosomal protein L10QuickGO ontologyBLASTP
461914688669650S ribosomal protein L1QuickGO ontologyBLASTP
468884731642950S ribosomal protein L11QuickGO ontologyBLASTP
4734447889546transcription antitermination protein NusGQuickGO ontologyBLASTP
4789448277384preprotein translocase SecE subunitQuickGO ontologyBLASTP
486004867273tRNA-ThrQuickGO ontology
486974876771tRNA-GlyQuickGO ontology
487744885582tRNA-TyrQuickGO ontologyBLASTP
488704894273tRNA-ThrQuickGO ontology
49078501121035UDP-N-acetylenolpyruvoylglucosamine reductaseQuickGO ontologyBLASTP
5024951127879510-methylenetetrahydrofolate reductaseQuickGO ontologyBLASTP
51160523051146acetylornithine deacetylaseQuickGO ontologyBLASTP
52469534731005N-acetyl-gamma-glutamyl-phosphate reductaseQuickGO ontologyBLASTP
5348954265777acetylglutamate kinaseQuickGO ontologyBLASTP
54294554991206argininosuccinate synthaseQuickGO ontologyBLASTP