It transfers the electrons to the main respiratory chain via etfubiquinone oxidoreductase etf dehydrogenase. While the old biochemical identification kits are not able to identify this species, the new colorimetric vitek 2 gn card correctly identified this isolate in 7 hours. One species, paracoccus yeei, is unique within the genus because it is associated with opportunistic human infections. The findings presented in this paper indicate that cdc group eo2 represents a previously undescribed paracoccus species associated with human infection. As determined by biochemical tests and analyses of fatty acid compositions, these organisms form a homogeneous group that appears to be distinct from but related to other paracoccus species. Paracoccus is also a genus of insects in family pseudococcidae. The genome of paracoccus denitrificans consists of two circular chromosomes and one plasmid. In the regnum bacteria paracoccus davis proteobacteria. We report the first case of paracoccus yeeii bacteremia in a patient with decompensated cirrhosis who presented with variceal hemorrhage.
Molecular studies were performed on a set of eo2 strains from various. Suspected transmission path is direct or indirect contact with contaminated persons or. Corneal graft rejection complicated by paracoccus yeei. This name became validly published when it appeared on validation list no. Roseomonas and paracoccus bacteremia shmuel shoham, md, infectious diseases, 03.
In conclusion, the sequence analysis of 16s rdna proved to be a useful diagnostic tool, with. Gramnegative bacilli coccoidbacilli growth obligateaerobic catalasepositive oxidasepositive. In this study, culturebased and polymerase chain reaction pcr sequencingbased investigations of a corneal scraping specimen confirmed p. Cdc eugonic oxidizer group 2 eo2 is a group of unclassified gramnegative bacterial strains isolated from various human sources. Genome structure of the opportunistic pathogen paracoccus yeei. Due to the emerging covid19 pandemic, jgi will not be accepting or processing any samples because of reduced onsite staffing until further notice. This rare gram negative organism that occurs naturally in the soil has been difficult to isolate until. Com is registrered at the cnil, declaration n 1286925. Formerly cdc group eo2, a novel bacterial species associated with human infection. The description of this group as a new species of the genus paracoccus is as follows. Definition of paracoccus pantotrophus in the dictionary.
Degradation of benzoapyrene by bacterial isolates from. Upon validation, this name was corrected from paracoccus yeeii sic to paracoccus yeei. However, infection of patients usually with underlying. Paracoccus denitrificans, is a coccoid bacterium known for its nitrate reducing properties, its ability to replicate under conditions of hypergravity and for being a relative of the eukaryotic mitochondrion endosymbiotic theory. The biochemical identification scheme for this recently described species is outlined. Clinical implications of paracoccus yeeii bacteremia in a. Image taken by richard evansgowing at the university of east anglia, norwich, uk. Pdf paracoccus yeei was identified as the etiologic agent of peritonitis in an ambulatory peritoneal dialysis patient. A new species, paracoccus yeeii, is proposed for the eo2 strains.
May 27, 2019 bacteria of the genus paracoccus inhabit various pristine and anthropologicallyshaped environments. This page was last edited on 18 october 2019, at 23. Bacteriaproteobacteriaalphaproteobacteriarhodobacteralesrhodobacteraceae paracoccus paracoccus yeei. The variable growth in 6% nacl suggests that these organisms are unlikely to be found in the brine environments that have yielded some paracoccus species. Page designed through the cooperative efforts of interagency itis teams. The eo2 strains studied, along with their sources and geographical origins, are presented in table 1.
The bacterium is an opportunistic human pathogen and has been associated with several infections peritonitis, conjunctivitis, bloodstream infection. Paracoccus yeei global catalogue of microorganisms. Moreover, similarity networking analysis highlighted the uniqueness of paracoccus prophages among known bacterial viruses. If an article link referred you here, you might want to go back and fix it to point directly to the intended page. The species paracoccus yeeii was originally described by daneshvar et al.
The 16s rrna gene sequences of several environmental p. One species can grow either autotrophically with h 2 and co 2 or heterotrophically with a wide variety of organic compounds as sole carbon sources. A 68yearold man who had undergone two penetrating keratoplasties of his left eye was admitted with early corneal graft failure. Paracoccus yeei keratitis in a contact lens wearer.
Bacteria of the genus paracoccus are common components of the microbiomes of many naturally and anthropogenically shaped environments. Paracoccus yeei as a cause of peritoneal dialysis peritonitis in the. One species, paracoccus yeei, is unique within the genus because it is. Paracoccus yeei was identified as the etiologic agent of peritonitis in an ambulatory peritoneal dialysis patient.
Paracoccus yeei was registered as a new species in 2003, and the. Formerly cdc group eo2, a novel bacterial species associated with human infection article pdf available in journal of clinical microbiology 4. No bacteria were seen on a gram stain, and a conventional culture was. However no infectious source is identified in up to 50% of patients with cirrhosis and clinical sepsis. The bacterium is an opportunistic human pathogen and has been associated with several infections. Pdf complete genome sequence of paracoccus yeei tt. Paracoccus denitrificans and the evolutionary origin of. Definition of paracoccus denitrificans in the dictionary. Culture of the anterior chamber fluid yielded paracoccus yeei, a nonfermentative gramnegative bacillus which thus far had only been implicated in ocular disease by means of pcr and 16s rrna gene sequencing directly on patient material.
The electron transfer flavoprotein serves as a specific electron acceptor for other dehydrogenases. Oct 25, 2018 bacteria of the genus paracoccus are common components of the microbiomes of many naturally and anthropogenically shaped environments. Because of its reaction pattern it is not unlikely. Paracoccus yeei is an environmental bacterium suspected to be responsible for ocular infections. It is possible that paracoccus denitrificans is an ancestor to the eukaryotic mitochondria. Hosted by the usgs core science analytics and synthesis. In taxonomy, paracoccus is a genus of the rhodobacteraceae. It is demonstrated that paracoccus denitrificans resembles a mitochondrion more closely than do other bacteria, in that it effectively assembles in a single organism those features of the. Interestingly, the phylogenetic reconstruction did not keep soil, invertebrate associated, and clinical paracoccus clusters robustly apart bootstrap values paracoccus yeei or others not yet reported in mouse bacterial species such as leucobacter chironomi, neisseria perflava and pantoea dispersa were observed.
Information and translations of paracoccus denitrificans in the most comprehensive dictionary definitions resource on the web. Other organisms were closely associated with staphylococcus caprae, staphylococcus sp. Because of its reaction pattern it is not unlikely that p. As per the law relating to information storage and personal integrity, you have the right to oppose art 26 of that law, access art 34 of that law and rectify art 36 of that law your personal data. Genome structure of the opportunistic pathogen paracoccus. The patient was a 74yearold man admitted in february 2008, diagnosed with. Paracoccus yeei was isolated in pure culture from an aerobic blood culture and bulla fluid from a 67yearold male. Paracoccus marinus global catalogue of microorganisms. At 48h she received a positive culture in a blood culture medium for paracoccus yeei. Ncbi taxonomy catalogue of life col species database global biodiversity information. No other type strains of paracoccus species studied produced dna relatedness values of greater than 54% when compared with the proposed type strain of the new species g1212, atcc baa599, ccug 46822.
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