Pre_GI Gene

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

NC_004061:237205 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
236288237208921D-alanine--D-alanine ligaseQuickGO ontologyBLASTP
2387072397711065UDP-N-acetylglucosamine--N-acetylmuramyl- pentapeptide pyrophosphoryl-undecaprenol N-acetylglucosamine transferaseQuickGO ontologyBLASTP
2397722408331062cell division protein FtsWQuickGO ontologyBLASTP
2409192422411323UDP-N-acetylmuramoylalanine--D-glutamate ligaseQuickGO ontologyBLASTP
2461722478781707penicillin binding protein 3 precursorQuickGO ontologyBLASTP
247950248195246cell division protein FtsLQuickGO ontology
248198249136939hypothetical 360 kDa proteinQuickGO ontologyBLASTP
249309249785477acetolactate synthase small subunitQuickGO ontologyBLASTP
2497902515051716acetolactate synthase large subunitQuickGO ontologyBLASTP
2529412543771437periplasmic serine proteaseQuickGO ontologyBLASTP
2544262552478222345-tetrahydropyridine-2-carboxylate N-succinyltransferaseQuickGO ontologyBLASTP
255297256082786methionine aminopeptidaseQuickGO ontologyBLASTP
25637025710473530S ribosomal protein S2QuickGO ontologyBLASTP
257146257949804elongation factor TsQuickGO ontologyBLASTP
258047258769723uridylate kinaseQuickGO ontologyBLASTP
258819259376558ribosome recycling factorQuickGO ontologyBLASTP
25948126067711971-deoxy-D-xylulose 5-phosphate reductoisomeraseQuickGO ontologyBLASTP