PMID: 4636786Apr 1, 1972

Preferential utilization of the glucosyl moiety of sucrose by a cariogenic strain of Streptococcus mutans

Infection and Immunity
C F SchachteleD J Knudson

Abstract

The utilization of sucrose by a cariogenic strain of Streptococcus mutans was studied. The soluble and cell-bound sucrose-dependent, polymer-forming sucrase activities constitutively produced by the bacteria during growth on glucose were measured. About eight times more dextransucrase activity was present than levan-sucrase activity. During various states of growth on sucrose, S. mutans accumulated two to five times more insoluble and water-soluble dextran than levan. Although more of the fructosyl moiety of sucrose was therefore available to the cells, the glucosyl portion of the disaccharide was preferentially incorporated into cellular macromolecules. Glucose was shown to inhibit the utilization of fructose by S. mutans.

Citations

May 1, 1976·Journal of Dental Research·R A CowmanR J Fitzgerald
Nov 1, 1974·Journal of Dental Research·G R GermaineA M Chludzinski
May 1, 1975·Journal of Dental Research·D F Schachtele, W L Leung
Jan 1, 1977·Journal of Dental Research·D W Ellis, C H Miller
Nov 1, 1973·Journal of Dental Research·C F Schachtele, J A Mayo

Related Concepts

Bacterial Proteins
Carbon Isotopes
Carious Dentin
Levulosa Ife
Glucose, (beta-D)-Isomer
Glucosyltransferases
Hexosyltransferase
Polysaccharides, Bacterial
Streptococcus
Sucrose

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Neural Activity: Imaging

Imaging of neural activity in vivo has developed rapidly recently with the advancement of fluorescence microscopy, including new applications using miniaturized microscopes (miniscopes). This feed follows the progress in this growing field.

The Tendon Seed Network

Tendons are rich in the extracellular matrix and are abundant throughout the body providing essential roles including structure and mobility. The transcriptome of tendons is being compiled to understand the micro-anatomical functioning of tendons. Discover the latest research pertaining to the Tendon Seed Network here.

Myocardial Stunning

Myocardial stunning is a mechanical dysfunction that persists after reperfusion of previously ischemic tissue in the absence of irreversible damage including myocardial necrosis. Here is the latest research.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Incretins

Incretins are metabolic hormones that stimulate a decrease in glucose levels in the blood and they have been implicated in glycemic regulation in the remission phase of type 1 diabetes. Here is the latest research.

Chromatin Regulation and Circadian Clocks

The circadian clock plays an important role in regulating transcriptional dynamics through changes in chromatin folding and remodelling. Discover the latest research on Chromatin Regulation and Circadian Clocks here.

Long COVID-19

“Long Covid-19” describes illness in patients who are reporting long-lasting effects of the SARS-CoV-19 infection, often long after they have recovered from acute Covid-19. Ongoing health issues often reported include low exercise tolerance and breathing difficulties, chronic tiredness, and mental health problems such as post-traumatic stress disorder and depression. This feed follows the latest research into Long Covid.

Spatio-Temporal Regulation of DNA Repair

DNA repair is a complex process regulated by several different classes of enzymes, including ligases, endonucleases, and polymerases. This feed focuses on the spatial and temporal regulation that accompanies DNA damage signaling and repair enzymes and processes.