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2 edition of rpsL gene and streptomycin resistance in Streptococcus gordonii and Streptococcus pyogenes found in the catalog.

rpsL gene and streptomycin resistance in Streptococcus gordonii and Streptococcus pyogenes

Radhika Vidyasanker

rpsL gene and streptomycin resistance in Streptococcus gordonii and Streptococcus pyogenes

by Radhika Vidyasanker

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Published .
Written in English

    Subjects:
  • Streptococcus -- Genetics.,
  • Streptococcus pyogenes -- Vaccination.

  • Edition Notes

    Statementby Radhika Vidyasanker.
    The Physical Object
    Pagination120 leaves, bound :
    Number of Pages120
    ID Numbers
    Open LibraryOL15567196M

      T protein: acid labile, trypsin resistant. Not virulent. 3. R protein: not virulent • Fimbrial antigens: for attachment in epithelial cells Antigenic cross - reactions Streptococcus pyogenes Human Capsular hyaluronic acid Human synovial fluid Cell wall proteins Myocardium Group A carbohydrates Cardiac valves Cytoplasmic membrane antigens. The cat(pC) gene was detected in seven chloramphenicol-resistant Streptococcus mitis isolates, and the aph(3')-III gene was detected in four viridans group streptococcal isolates with high.

    all other alpha-hemolytic (viridans) streptococci. Streptococcus pneumoniae is bile soluble whereas all other alpha-hemolytic streptococci are bile resistant. Sodium deoxycholate (2% in water) will lyse the pneumococcal cell wall. A clearing of the turbidity in the bile tube indicates a positive test (Fig. 22).File Size: KB. Streptococcus pyogenes isolates resistant to co-trimoxazole (%), and these findings differ from results of present study. While Bergmann, () (13) explained that Streptococcus pyogenes isolates showed intermediate resistance to trimethoprim, which were 69(%) and these results similar current study (Figure 1).

    A global trend of increasing antimicrobial resistance, but with wide variations at national levels, is well-documented in the literature ().Strong evidence supports an association between antibiotic use and resistance in hospitals (2,3).By contrast, the relationship between antibiotic consumption and resistance has been more difficult to establish for the outpatient setting, although some data. The rpsL gene was then amplified by PCR and sequenced for its nucleotide and amino acid sequences. Bioinformatics tools were used to compare the mutant sequences with classmates’ sequences and major databases, in order to evaluate which nucleotides and amino acids were different in the mutants compared to the wild type, E. coli W


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RpsL gene and streptomycin resistance in Streptococcus gordonii and Streptococcus pyogenes by Radhika Vidyasanker Download PDF EPUB FB2

In streptomycin resistant strains of S. gordonii, namely GP, SP and SP, the AAA coding for Lys56 was mutated to ACA, coding for Thr The lysine to threonine transition, causing resistance to streptomycin was identical to that expected from the literature. The streptomycin resistance gene of S. pyogenes was mapped using similar Author: Radhika Vidyasanker.

The high level streptomycin resistance gene from Streptococcus pneumoniae is a homologue of the ribosomal protein S12 gene from Escherichia coli. The rpsL gene and streptomycin resistance in single and multiple drug- resistant strains of Mycobacterium tuberculosis.

The rpsL gene and streptomycin resistance in single and multiple drug-resistant strains of Mycobacterium tuberculosis. Nair J(1), Rouse DA, Bai GH, Morris SL. Author information: (1)Laboratory of Mycobacteria, United States Food and Drug Administration, Bethesda, Maryland Cited by: Mutations in the rpsL and rrs genes associated with streptomycin resistance in Mycobacterium tuberculosis clinically isolated in Japan were characterized.

The rpsL genes of clinical isolates were amplified by PCR and classified into two groups on the basis of MboII restriction ‐three out of 54 (611%) streptomycin‐highly resistant isolates (MIC > μg ml −1) were Cited by: The rpsL gene and streptomycin resistance in single and multiple drug-resistant strains of Mycobacterium tuberculosis.

Mol Microbiol. Nov; 10 (3)– [Google Scholar] Ohama T, Yamao F, Muto A, Osawa S. Organization and codon usage of the streptomycin operon in Micrococcus luteus, a bacterium with a high genomic G + C by: Chromosomally acquired streptomycin resistance is frequently due to mutations in the gene encoding the ribosomal protein S12, presence of several rRNA operons (rrn) and a single rpsL gene in most bacterial genomes prohibits the isolation of streptomycin-resistant mutants in which resistance is mediated by mutations in the 16S rRNA gene (rrs).Cited by: ↑ Chakrabarti, S & Gorini, L () Growth of bacteriophages MS2 and T7 on streptomycin-resistant mutants of Escherichia coli.

Bacteriol. PubMed ↑ Chakrabarti, SL & Gorini, L () A link between streptomycin and rifampicin mutation. As mentioned earlier, one of the most important advances was the study by Lancefield that classified the organisms into various serological groups and identified the group A streptococcus, Streptococcus pyogenes, as the organism responsible for most of the hemolytic streptococcal infections in humans (Lancefield, ).Cited by: 4.

Streptomycin (Sm) was the first antibiotic used against Mycobacterium tuberculosis, the aetiological agent of tuberculosis (TB).However, point mutations in the rpsL gene can generate resistance to Sm, which is why spontaneous resistance to this antibiotic emerges so rapidly during treatment.

Here we examine the interaction between Sm resistance and sensitivity to other ribosome-targeting Cited by: 6. The streptomycin biosynthesis gene cluster, consisting of 27 genes, is transcribed by 9 polycistronic mRNA species (Figure 6).

51 As described above, the A-factor signal, starting with afsA encoding an A-factor biosynthesis enzyme, is transferred first to ArpA, the A-factor receptor protein, and then to AdpA, a key transcriptional activator. rRNA encoded by rpsL and rrs, respectively, which locate in the decoding center of 30S ribosomal subunit interrupts the protein translation fidelity, thereby inhibiting protein synthe-sis and resulting in bacterial death2.

Consequently, rpsL and Mutations in Streptomycin Resistance Genes and Their Relationship to Streptomycin. THE RPSL GENE AND STREPTOMYCIN RESISTANCE IN STREPTOCOCCUS GORDONII AND STREPTOCOCCUS PYOGENES.

CHAPTER 1 THESIS INTRODUCTION Streptococcal disease and the need for a vaccine InHomer Smith reported, " As rheumatic fever is not generally reportable, it is impossible to obtain accurate statistics as to its incidence.

It is very. Primed in Great Britain. TRANSFORMATION OF STREPTOCOCCI TO STREPTOMYCIN RESISTANCE BY ORAL STREPTOCOCCAL DNA GUDRUN WESTERGREN and C.

EMILSON Department of Cariology, Faculty of Odontology. University of Göteborg, S 33 Göteborg, Sweden Summary—DNA from streptomycin-resistant strains of Streptococcus sanguis, Strep. by: Genetic element Φ (formerly Tn) is a prophage of Streptococcus pyogenes which carries the macrolide efflux resistance genes mef(A)/msr(D) and is capable of conjugal transfer among.

Bacterial strains, media, and chemicals. gordonii Challis 2, a rifamycin-resistant ( μg/ml) strain of S. gordonii Challis (), was used as the parent oral streptococcal strains used were obtained from the American Type Culture Collection, except for Streptococcus parasanguis FW (from P.

Fives-Taylor, University of Vermont) and Streptococcus oralis C (from P Cited by: Resistance to streptomycin and spectinomycin. By jeltsch on Sun, 01/11/ - Many cDNA clones from the ORFeome gene collection come in a pENTR plasmid*. To grow these clones most people use spectinomycin because that’s what the antibiotic resistance gene is called in the maps on the ORFeome collaboration and what the protocol.

The high level streptomycin resistance gene from Streptococcus pneumoniae is a homologue of the ribosomal protein S12 gene from Escherichia coli.

C Salles CNRS-UPR, Université Paul Sabatier, Toulouse, France. Growth, Development, and Gene Expression in a Persistent Streptococcus gordonii Biofilm Article in Infection and Immunity 71(8) September with 17 Reads How we measure 'reads'.

Streptomycin resistant (Strr) Erwinia amylovora were detected in but these were unstable and died after several transfers. Generation times for California pear orchards in areas where little or no streptomycin had been Strr and Str' E. amylovora strains ranged from 78 to min with no. Currently, mutations in three genes, namely rrs, rpsL, and gidB, encoding 16S rRNA, ribosomal protein S12, and 16S rRNA-specific methyltransferase, respectively, are considered to be involved in conferring resistance to streptomycin (STR) in Mycobacterium tuberculosis.

The aim of this study was to investigate the spectrum and frequency of these mutations in M. tuberculosis clinical isolates Cited by:. Porphyromonas gingivalis Genes Involved in Community Development with Streptococcus gordonii Article Literature Review (PDF Available) in Infection and Immunity 74(11) December Streptococcus gordonii utilizes several distinct gene functions to recruit Porphyromonas gingivalis into a mixed community Masae Kuboniwa, Gena D.

Tribble, Chloe E. James, Ali O. Kilic, Lin Tao, Mark C. Herzberg, Satoshi Shizukuishi, Richard J. LamontCited by: The streptomycin counter-selection system is a useful tool for constructing unmarked in-frame gene deletions, which is a fundamental approach to study bacteria and their pathogenicity at the molecular level.

A prerequisite for this system is acquiring a streptomycin-resistant strain due to rpsL mutations, which encodes the ribosomal protein SCited by: 8.