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Genome sequencing of strain Cellulosimicrobium sp. TH-20 with ginseng biotransformation ability.


ABSTRACT: Biotransformation for increasing the pharmaceutical effect of ginsenosides is getting more and more attractions. Strain Cellulosimicrobium sp. TH-20 isolated from ginseng soil samples was identified to produce enzymes contributing to its excellent biotransformation activity against ginsenosides, the main active components of ginseng. Based on phylogenetic tree and homology analysis, the strain can be designated as Cellulosimicrobium sp. Genome sequencing was performed using the Illumina Miseq to explore the functional genes involved in ginsenoside transformation. The draft genome of Cellulosimicrobium sp. TH-20 encoded 3450 open reading frames, 51 tRNA, and 9 rRNA. All ORFs were annotated using NCBI BLAST with non-redundant proteins, Gene Ontology, Cluster of Orthologous Gene, and Kyoto Encyclopedia of Genes and Genomes databases. A total of 11 genes were selected based on the functional annotation analysis. These genes are relevant to ginsenoside biotransformation, including 6 for beta-glucosidase, 1 for alpha-N-arabinofuranosidase, 1 for alpha-1,6-glucosidase, 1 for endo-1,4-beta-xylanase, 1 for alpha-L-arabinofuranosidase, and 1 for beta-galactosidase. These glycosidases were predicted to catalyze the hydrolysis of sugar moieties attached to the aglycon of ginsenosides and led to the transformation of PPD-type and PPT-type ginsenosides.

PROVIDER: S-EPMC5505874 | BioStudies |

REPOSITORIES: biostudies

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