These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Cloning, sequencing and characterization of a urease gene operon from urease-positive thermophilic Campylobacter (UPTC).
    Author: Kakinuma Y, Iida H, Sekizuka T, Usui K, Murayama O, Takamiya S, Millar BC, Moore JE, Matsuda M.
    Journal: J Appl Microbiol; 2007 Jul; 103(1):252-60. PubMed ID: 17584472.
    Abstract:
    AIMS: To clone, sequence and characterize the genetic organization of urease genes within urease-positive thermophilic Campylobacter (UPTC). METHODS AND RESULTS: An approx. 5.1-kbp region encoding a urease gene operon was identified, when recombinant plasmid DNAs from a genomic DNA library of a Japanese isolate (CF89-12) of UPTC were analysed. CONCLUSIONS: Six closely spaced and putative open reading frames (ORFs) for ureA, ureB, ureE, ureF, ureG and ureH were detected. ATG codons initiated each ORF of the UPTC urease operon except for ureB and ureH, which commenced with the most probable TTG codon. Overlaps were detected between ureA and ureB and also between ureB and ureE. Probable ribosome-binding sites and a putative rho-independent transcriptional termination region were identified. Two putative promoter structures, consisting of consensus sequences at the -35 like and -10 regions were also identified. SIGNIFICANCE AND IMPACT OF THE STUDY: Construction of a neighbour-joining tree based on the nucleotide sequence data of urease genes indicated that UPTC formed a cluster with some Helicobacter organisms separate from the other urease-producing bacteria, suggesting a commonly shared ancestry between UPTC and Helicobacter urease genes.
    [Abstract] [Full Text] [Related] [New Search]