AM284366.1

Detailed information

Microorganism
Ochrobactrum sp. R-24289

Taxonomy
Phylum : Proteobacteria Class : Alphaproteobacteria Order : Rhizobiales Family : Brucellaceae Genus : Ochrobactrum

Isolation Source
nan

Enzyme Name
nitric oxide reductase CnorB

Protein Information
Pro_GenBank I.D： CAK95685.1 Length：146 aa Protein FASTA_sequence: Link

Information about Article
Reference：Heylen et al., 2007 Title：Nitric oxide reductase (norB) gene sequence analysis reveals discrepancies with nitrite reductase (nir) gene phylogeny in cultivated denitrifiers. Pubmed ID：17359277 Pubmed link： Link Full research link： Link Abstract：Gene sequence analysis of cnorB and qnorB, both encoding nitric oxide reductases, was performed on pure cultures of denitrifiers, for which previously nir genes were analysed. Only 30% of the 227 denitrifying strains rendered a norB amplicon. The cnorB gene was dominant in Alphaproteobacteria, and dominantly coexisted with the nirK gene, coding for the copper-containing nitrite reductase. Both norB genes were equally present in Betaproteobacteria but no linked distributional pattern of nir and norB genes could be observed. The overall cnorB phylogeny was not congruent with the widely accepted organism phylogeny based on 16S rRNA gene sequence analysis, with strains from different bacterial classes having identical cnorB sequences. Denitrifiers and non-denitrifiers could be distinguished through qnorB gene phylogeny, without further grouping at a higher taxonomic resolution. Comparison of nir and norB phylogeny revealed that genetic linkage of both genes is not widespread among denitrifiers. Thus, independent evolution of the genes for both nitrogen oxide reductases does also occur.

Reference：Heylen et al., 2007
Title：Nitric oxide reductase (norB) gene sequence analysis reveals discrepancies with nitrite reductase (nir) gene phylogeny in cultivated denitrifiers.
Pubmed ID：17359277
Pubmed link： Link
Full research link： Link
Abstract：Gene sequence analysis of cnorB and qnorB, both encoding nitric oxide reductases, was performed on pure cultures of denitrifiers, for which previously nir genes were analysed. Only 30% of the 227 denitrifying strains rendered a norB amplicon. The cnorB gene was dominant in Alphaproteobacteria, and dominantly coexisted with the nirK gene, coding for the copper-containing nitrite reductase. Both norB genes were equally present in Betaproteobacteria but no linked distributional pattern of nir and norB genes could be observed. The overall cnorB phylogeny was not congruent with the widely accepted organism phylogeny based on 16S rRNA gene sequence analysis, with strains from different bacterial classes having identical cnorB sequences. Denitrifiers and non-denitrifiers could be distinguished through qnorB gene phylogeny, without further grouping at a higher taxonomic resolution. Comparison of nir and norB phylogeny revealed that genetic linkage of both genes is not widespread among denitrifiers. Thus, independent evolution of the genes for both nitrogen oxide reductases does also occur.