scholarly journals Characterization of a copper-transport operon, copYAZ, from Streptococcus mutans The GenBank accession number for the cop operon sequence reported in this paper is AF296446.

Microbiology ◽  
2001 ◽  
Vol 147 (3) ◽  
pp. 653-662 ◽  
Author(s):  
Neeraj Vats ◽  
Song F. Lee
Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2432
Author(s):  
Li Chen ◽  
Lu-Lu Zhang ◽  
Jing-Nan Ren ◽  
Xiao Li ◽  
Gang Fan ◽  
...  

Flavors and fragrances have high commercial value in the food, cosmetic, chemical and pharmaceutical industries. It is interesting to investigate the isolation and characterization of new microorganisms with the ability to produce flavor compounds. In this study, a new strain of Klebsiella sp. O852 (accession number CCTCC M2020509) was isolated from decayed navel orange (Citrus sinensis (L.) Osbeck), which was proved to be capable of converting limonene to trans-dihydrocarvone. Besides, the optimization of various reaction parameters to enhance the trans-dihydrocarvone production in shake flask was performed for Klebsiella sp. O852. The results showed that the yield of trans-dihydrocarvone reached up to 1 058 mg/L when Klebsiella sp. O852 was incubated using LB-M medium for 4 h at 36 °C and 150 rpm, and the biotransformation process was monitored for 36 h after adding 1680 mg/L limonene/ethanol (final ethanol concentration of 0.8% (v/v)). The content of trans-dihydrocarvone increased 16 times after optimization. This study provided a basis and reference for producing trans-dihydrocarvone by biotransformation.


2010 ◽  
Vol 55 (1) ◽  
pp. 34-39 ◽  
Author(s):  
K. Nakano ◽  
R. Nomura ◽  
N. Taniguchi ◽  
J. Lapirattanakul ◽  
A. Kojima ◽  
...  

1987 ◽  
Vol 55 (10) ◽  
pp. 2538-2540 ◽  
Author(s):  
S Noji ◽  
S Date ◽  
Y Abiko ◽  
H Takiguchi ◽  
S Taniguchi
Keyword(s):  

Microbiology ◽  
2017 ◽  
Vol 163 (4) ◽  
pp. 488-501 ◽  
Author(s):  
Richard N Besingi ◽  
Iwona B Wenderska ◽  
Dilani B Senadheera ◽  
Dennis G Cvitkovitch ◽  
Joanna R Long ◽  
...  

2018 ◽  
Vol 33 (1) ◽  
pp. 40
Author(s):  
Monica Moreira ◽  
Mariana Machado Fidelis do Nascimento ◽  
Mariane Moreira Poletto ◽  
Débora Do Rocio Kliisiowicz ◽  
Renata Rodrigues Gomes ◽  
...  

OBJECTIVE: Caries is a multifactorial infectious disease and the main etiological agent is the bacteria Streptococcus mutans due to its virulence factors, which enable the adherence to dental enamel and favours the formation of dental biofilm through the production of extracellular polysaccharides. The transmission of S. mutans can occur between people, often within families. The present study aimed to evaluate the intrafamily genetic pattern of S. mutans through partial sequencing of the gene that encodes the glucosyltransferase β (gtfB) enzyme.METHODS: We previously analyzed saliva samples from 40 individuals from nine families, and it was obtained 64 isolates biochemically characterized as S. mutans. The isolates were evaluated by random amplification of polymorphic DNA (RAPD). Those with greater similarity were characterized by partial sequence 16S rRNA gene and the gtfB gene sequencing.RESULTS: It was observed genetic similarity among strains isolated from individuals with caries activity; while isolates from individual without caries showed that they are genetically distinct, suggesting a different virulence pattern.CONCLUSION: The present results demonstrated that partial sequencing of the gtfB gene showed to be a potential marker to investigate genetic pattern and virulence of S. mutans, deserving further investigation in order to identify families at risk of caries.


1995 ◽  
Vol 10 (3) ◽  
pp. 183-187 ◽  
Author(s):  
S. G. Dashper ◽  
P. F. Riley ◽  
E. C. Reynolds

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