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StatusReference proteome
Gene counti - Download one protein sequence per gene (FASTA)
Proteome IDiUP000000640
Taxonomy196162 - Nocardioides sp. (strain ATCC BAA-499 / JS614)
StrainATCC BAA-499 / JS614
Last modifiedFebruary 27, 2018
Genome assembly and annotationi GCA_000015265.1 from ENA/EMBL

Nocardioides sp. (strain BAA-499 / JS614) is an aerobic mesophillic Gram-positive bacterium phylogenetically associated with the Actinobacteria. This bacterium grows quickly and efficiently on media containing vinyl chloride (VC) and ethane (ETH). VC in groundwater is often produced as a result of incomplete reductive dechlorination. It tends to accumulate and persist in anaerobic groundwater zones but has been shown to degrade readily if the VC plume migrates in aerobic groundwater zones. Several strains of VC-assimilating bacteria, including strain JS614, have recently been isolated, indicating that these organisms may participate in natural attenuation of VC at certain sites. Strain JS614 is unique among growth-coupled VC-degraders. All other known aerobic VC-assimilating bacteria are either Mycobacteria or Pseudomonads. In addition to its phylogenetic distinction, strain JS614 is unique among VC-assimilating bacteria due to a relatively high VC yield coefficient, high VC utilization rate, and peculiar VC starvation sensitivity. The fact that strain JS614 derives approximately 60-76% more energy from VC and ETH than other VC degraders implies that the pathway of VC-assimilation in strain JS614 may be different than in all other known VC-assimilating bacteria. VC-grown JS614 cultures starved of VC for longer than one day do not degrade VC for at least 40 days after refeeding. This suggests that regulation and maintenance of the VC pathway in strain JS614 is significantly different than in mycobacterial or pseudomonad VC degraders and may indicate the energy dependent detoxification of a potentially toxic VC metabolic intermediate. The monooxygenase system appears to play a major role in the VC starvation response and not the epoxide transformation system, as was previously speculated. JS614 harbors a large plasmid that encodes VC/ETH pathway genes. PCR experiments using primers specific for putative JS614 monooxygenase and epoxide transforming genes indicate that these genes are located on the large plasmid.


Component nameGenome Accession(s)
Plasmid pNOCA01264
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