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- W2005065753 abstract "Fructanase enzymes hydrolyze the β-2,6 and β-2,1 linkages of levan and inulin fructans, respectively. We analyzed the influence of fructan on the growth of Prevotella intermedia. The growth of P. intermedia was enhanced by addition of inulin, implying that P. intermedia could also use inulin. Based on this finding, we identified and analyzed the genes encoding a putative fructanase (FruA), sugar transporter (FruB), and fructokinase (FruK) in the genome of strain ATCC25611. Transcript analysis by RT-PCR showed that the fruABK genes were co-transcribed as a single mRNA and semi-quantitative analysis confirmed that the fruA gene was induced in response to fructose and inulin. Recombinant FruA and FruK were purified and characterized biochemically. FruA strongly hydrolyzed inulin, with slight degradation of levan via an exo-type mechanism, revealing that FruA is an exo-β-d-fructanase. FruK converted fructose to fructose-6-phosphate in the presence of ATP, confirming that FruK is an ATP-dependent fructokinase. These results suggest that P. intermedia can utilize fructan as a carbon source for growth, and that the fructanase, sugar transporter, and fructokinase proteins we identified are involved in this fructan utilization." @default.
- W2005065753 created "2016-06-24" @default.
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- W2005065753 date "2013-02-01" @default.
- W2005065753 modified "2023-10-15" @default.
- W2005065753 title "Identification and functional analysis of the gene cluster for fructan utilization in Prevotella intermedia" @default.
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- W2005065753 doi "https://doi.org/10.1016/j.gene.2012.12.023" @default.
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