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Mostrando 881 - 900 Resultados de 5,235 Para Buscar '"Operón"', tiempo de consulta: 0.21s Limitar resultados
  1. 881
    “…Another operon contains either ha (haemagglutinin) or orfX genes (of unknown function). …”
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    Identification of a novel botulinum neurotoxin gene cluster in Enterococcus
  2. 882
    “…Mutations in the polysaccharide synthesis operon (pso) abolish lipopolysaccharide O-antigen synthesis and Weil–Felix serology and alter outer-membrane protein assembly. …”
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    Rickettsia conorii O antigen is the target of bactericidal Weil–Felix antibodies
  3. 883
    por Jalal, Naif, Lee, Song F.
    Publicado 2020
    “…In this study, we used mutational, phenotypic, and biochemical approaches to characterize the role of a methionine sulfoxide reductase (MsrAB) and proteins encoded by genes in the msrAB operon and an adjacent operon in oxidative stress tolerance in S. gordonii. …”
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    The MsrAB reducing pathway of Streptococcus gordonii is needed for oxidative stress tolerance, biofilm formation, and oral colonization in mice
  4. 884
    “…Accumulating evidence suggests that six proteases encoded in the spl operon of a dangerous human pathogen, Staphylococcus aureus, may play a role in virulence. …”
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    Structural Determinants of Substrate Specificity of SplF Protease from Staphylococcus aureus
  5. 885
    “…A synthetic bacterial operon containing the cytochrome P450 CYP103168 and the reductase CPR64795 of the fungus Cochliobolus lunatus able to hydroxylate steroids has been engineered into a shuttle plasmid named pMVFAN. …”
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    Engineering the Steroid Hydroxylating System from Cochliobolus lunatus in Mycolicibacterium smegmatis
  6. 886
    “…Surfactin is a biosurfactant produced by Bacillus subtilis. The srfA operon, Sfp gene, and two quorum sensing systems are required for its production. …”
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    Molecular genetics of surfactin and its effects on different sub-populations of Bacillus subtilis
  7. 887
    “…Its intracellular survival and replication depend on a functional virB system, an operon encoded by VirB1–VirB12. Type IV secretion system (T4SS) encoded by the virB operon is an important virulence factor of Brucella. …”
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    The VirB System Plays a Crucial Role in Brucella Intracellular Infection
  8. 888
    “…This difference can be attributed to the presence of an additional nitrogenase operon found exclusively in R. strictum and to the structural variation in nitrogenase operon in R. tesquicola.…”
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    Nitrogen Fixation Activity and Genome Analysis of a Moderately Haloalkaliphilic Anoxygenic Phototrophic Bacterium Rhodovulum tesquicola
  9. 889
    “…The putative lanthipeptides were heterologously coexpressed in Escherichia coli as GFP–prepeptide fusions along with the operon-encoded class I lanthipeptide modification machinery VdsCB. …”
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    Unusual Class I Lanthipeptides from the Marine Bacteria Thalassomonas viridans
  10. 890
    “…Together, this study identifies a previously uncharacterized three gene operon in B. burgdorferi as encoding a putative xanthine dehydrogenase critical for virulence. …”
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    A putative xanthine dehydrogenase is critical for Borrelia burgdorferi survival in ticks and mice
  11. 891
    “…Four iModulons contained the nga-ifs-slo virulence-related operon, which allowed us to identify carbon sources that control its expression. …”
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    Elucidation of independently modulated genes in Streptococcus pyogenes reveals carbon sources that control its expression of hemolytic toxins
  12. 892
    “…In both experiments, OPERON confirmed the findings obtained through the manual version. …”
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    Automation at the service of the study of executive functions in preclinical models
  13. 893
    “…We identified one of the genes of the dlt operon, dltX, as a suppressor of the SpeB-null phenotype of the Δpde2 mutant. …”
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    The Dlt and LiaFSR systems derepress SpeB production independently in the Δpde2 mutant of Streptococcus pyogenes
  14. 894
    “…BACKGROUND: The sequenced genomes of the Brucella spp. have two urease operons, ure-1 and ure-2, but there is evidence that only one is responsible for encoding an active urease. …”
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    Enzymatic, immunological and phylogenetic characterization of Brucella suis urease
  15. 895
    “…Microarray analyses revealed that expression of a four-gene operon involved in glycerol transport and metabolism, bb0240-bb0243, was significantly downregulated by abrogation of Rrp1. …”
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    Cyclic di-GMP is Essential for the Survival of the Lyme Disease Spirochete in Ticks
  16. 896
    por Li, Zhiru, Carlow, Clotilde K. S.
    Publicado 2012
    “…Interestingly, both transcription factors bind to the promoter of the ribA gene that precedes virB8-1, the first gene in operon 1 of the wBm T4SS. RT-PCR reveals ribA and virB8-1 genes are co-transcribed as one operon, indicating the ribA gene and T4SS operon 1 are co-regulated by both wBmxR1 and wBmxR2. …”
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    Characterization of Transcription Factors That Regulate the Type IV Secretion System and Riboflavin Biosynthesis in Wolbachia of Brugia malayi
  17. 897
    “…In vitro expression studies demonstrated that EccB(5) and EccC(5) encoding genes constitute an operon. The expression of this operon is essential for M. tuberculosis, since the deletion of the eccB(5)-eccC(5) genomic segment at the ESX-5 locus is possible only after the integration of a second functional copy of eccB(5)-eccC(5) genes into the M. tuberculosis chromosome. …”
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    The ESX-5 Associated eccB(5)-eccC(5) Locus Is Essential for Mycobacterium tuberculosis Viability
  18. 898
    “…These include the polymyxin resistance (pmr) operon, which is required for aminoarabinose modification of LPS and protecting the outer membrane from antimicrobial peptide disruption and killing. …”
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    Extracellular DNA-induced antimicrobial peptide resistance in Salmonella enterica serovar Typhimurium
  19. 899
    “…Weak in vitro biofilm production seemed to correlate with the absence of the ica operon regardless of the commensal or pathogenic origin of the isolate. …”
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    Genetic characteristics and antimicrobial resistance of Staphylococcus epidermidis isolates from patients with catheter-related bloodstream infections and from colonized healthcare workers in a Belgian hospital
  20. 900
    “…Sequence analysis of the orf2-folC-operon of S. suis isolates 10 and S735 revealed an SNP in the −35 region of the putative promoter sequence of the operon, as well as several SNPs resulting in amino acid substitutions in the ORF2 protein. …”
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    A naturally occurring nucleotide polymorphism in the orf2/folc promoter is associated with Streptococcus suis virulence
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