Genetic Analysis of Streptococcus mutans Glucosyltransferase Genes
Summary
Streptococcus mutans is a principal etiological agent in dental caries due to its capacity to synthesise extracellular glucans from dietary sucrose. This biosynthetic activity is mediated by a family of glucosyltransferase enzymes encoded by the gtfB, gtfC and gtfD genes. Each GTF enzyme exhibits distinct specificity for α-1,3 or α-1,6 linkages, yielding water-insoluble and water-soluble glucans that underpin biofilm formation on tooth surfaces. Genetic analysis has uncovered allelic variation in the tandem gtfB–gtfC region, frequent homologous recombination events and regulatory interplay that modulates enzyme expression in response to environmental cues. Comparative genomics and transcriptomic profiling have further delineated promoter architectures and two-component systems that influence gtf transcription. Insights into the molecular diversity of these loci not only illuminate the adaptive evolution of cariogenicity but also inform the design of targeted inhibitors and vaccine antigens. Collectively, advances in sequencing and functional assays are refining our understanding of how genetic variation in glucosyltransferase genes drives biofilm architecture, ecological fitness within the oral microbiome and virulence potential.
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Genetic Analysis of Streptococcus mutans Glucosyltransferase Genes publication trend
The graph below shows the total number of articles in genetic analysis of streptococcus mutans glucosyltransferase genes across all publications each year (not limited to Nature Index journals).
Technical terms
Glucosyltransferase (GTF): Enzyme that catalyses the transfer of glucose from sucrose to form extracellular glucan polymers.
Biofilm: Structured microbial community attached to a surface and embedded in a self-produced matrix of extracellular polymers.
Allelic variation: Differences in the nucleotide sequence of a gene locus among natural bacterial isolates.
Homologous recombination: Exchange of genetic information between similar or identical DNA sequences, leading to sequence rearrangements.
Polymerase chain reaction (PCR): Laboratory technique for the exponential amplification of specific DNA fragments.
Water-insoluble glucan (WIG): High-molecular-weight glucan polymer that contributes to the structural integrity of dental biofilms.
References
- Allelic Variation in gtfB–gtfC Region of Natural Variant of Streptococcus mutans Without Biofilm Formation. Bacteria (2024).
- Identifikasi gen kariogenik glukosiltransferase Streptococcus mutans pada pasien karies gigi Identification of Streptococcus mutans cariogenic gene glucosyltransferase (gtf) in dental caries patients. Jurnal Kedokteran Gigi Universitas Padjadjaran (2021).
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