We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A Comparative Study of Enzymes Involved in Glucose Phosphorylation in Oral Streptococci.
- Authors
VADEBONCOEUR, C.; MAYRAND, D.; TRAHAN, L.
- Abstract
The properties of two enzymes involved in the phosphorylation of glucose were studied in three oral streptococci species. The glucokinase of Streptococcus mutans had a lower affinity for glucose and ATP than did those from S. salivarius and S. sanguis. The enzyme had an identical pH optimum (pH 8.0) in all three bacteria. However, the results from the phosphoenolpyruvate phosphotransferase system showed a different pattern when its activity was measured using 2-deoxyglucose with toluenized cells. Uptake studies of 2-deoxyglucose also revealed that the three microorganisms had different affinities for this compound. This glucose analogue strongly inhibited the acid production of S. salivarius, but did not affect the glycolysis of the other two bacteria.
- Subjects
PHOSPHORYLATION; STREPTOCOCCUS -- Molecular aspects; STREPTOCOCCUS salivarius; ORAL microbiology; BACTERIA cytochemistry; MICROBIAL respiration; GLYCOLYSIS
- Publication
Journal of Dental Research, 1982, Vol 61, Issue 1, p60
- ISSN
0022-0345
- Publication type
Article
- DOI
10.1177/00220345820610011401