Pre_GI: SWBIT SVG BLASTN

Query: NC_017256:545204 Buchnera aphidicola str. Ak (Acyrthosiphon kondoi) chromosome,

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

General Information: 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.

Subject: NC_002162:643446 Ureaplasma parvum serovar 3 str. ATCC 700970, complete genome

Lineage: Ureaplasma parvum; Ureaplasma; Mycoplasmataceae; Mycoplasmatales; Tenericutes; Bacteria

General Information: This organism (Ureaplasma urealyticum biovar 1) is normally found as a commensal organism in the human genital tract. As an opportunistic pathogen, it can cause a sexually-transmitted disease and is recognized as causing non-chlamydial non-gonococcal urethritis. It can also cause obstetric complications in pregnant women, severe infections in infants, as well as meningitis. Like other Mollicutes, it is a wall-less bacterium and has undergone marked genome reduction. This organism appears to generate ATP through the hydrolysis of urea by the urease enzyme.