Pre_GI: SWBIT SVG BLASTN

Query: NC_015662:15641 Buchnera aphidicola (Cinara tujafilina) chromosome, complete

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_014121:3235911 Enterobacter cloacae subsp. cloacae ATCC 13047 chromosome, complete

Lineage: Enterobacter cloacae; Enterobacter; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria

General Information: Enterobacter species are found in natural environments such as water, sewage, soil, and vegetables; some species are found in human and animal species. Enterobacter cloacae is a prevalent nosocomial pathogen as it is highly resistant to disinfectants and antimicrobial agents. E.cloacae subsp. cloacae strain ATCC 13047 was isolated from human cerebrospinal fluid in 1890 and is the type strain. These "ICU bugs" cause significant morbidity and mortality, and infection management is complicated by multiple antibiotic resistance. These bacteria possess inducible beta-lactamases, which are undetectable in vitro but are also responsible for resistance during treatment.