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Query: NC_005126:1549066:1553793 Photorhabdus luminescens subsp. laumondii TTO1, complete genome

Start: 1553793, End: 1554782, Length: 990

Host Lineage: Photorhabdus luminescens; Photorhabdus; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria

General Information: This strain was isolated on Trinidad and Tobago. It is a symbiont of the nematode Heterorhabditis bacteriophora. Bioluminescent bacterium. This organism is unusual in that it is symbiotic within one insect, and pathogenic in another, the only organism that is known to exhibit this dual phenotype. Enzymes are then released by the bacteria that result in rapid degradation of the insect body, allowing both bacteria and nematode to feed and reproduce. During this period Photorhabdus luminescens releases bacteriocidal products, including antibiotics and bacteriocins, that prevent infection of the larva by competitive microbes. The result is promotion of Photorhabdus luminescens-nematode interactions that result in continuation of the symbiotic relationship. In order to engage in a symbiotic relationship with the nematode and a pathogenic one with the insect larva, the bacterium encodes specific factors that encourage both. These include a large number of genes that code for secreted toxins and enzymes, as well as genes that encode products for the production of antibiotics and bacteriocins. Secretion of these products occurs by an array of systems including type I, type II, and type III secretion systems. The type III system is closely related to the Yersinia plasmid-encoded type III system. Genes that promote symbiotic relationships are also encoded on genomic islands on the chromosome including some that affect nematode development. Virulence genes appear to be active during exponential growth. Symbiotic genes appear to function during stationary phase (post-exponential) growth. The switch from one state to another is controlled. Photorhabdus luminescens is capable of giving off light, a complex process that requires the products of the lux operon.

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SubjectStartEndLengthSubject Host DescriptionCDS descriptionE-valueBit score
NC_012962:3499900:35481233548123355871510593Photorhabdus asymbiotica, complete genomeSimilar to RTX toxin RtxA4e-97354
NC_012962:3499900:34999003499900351018910290Photorhabdus asymbiotica, complete genomeSimilar to RTX toxin RtxA9e-94343
NC_002505:1550108:15501081550108156378413677Vibrio cholerae O1 biovar eltor str. N16961 chromosome I, completeRTX toxin RtxA6e-90330
NC_016445:1027143:10271431027143104074413602Vibrio cholerae O1 str. 2010EL-1786 chromosome 1, completeRTX toxin RtxA5e-89327
NC_016944:1547176:15471761547176156081313638Vibrio cholerae IEC224 chromosome I, complete sequenceRTX toxin RtxA5e-89327