Arginine catabolism by strains of oral streptococci
- 1 July 1990
- Vol. 98 (7-12) , 1045-1052
- https://doi.org/10.1111/j.1699-0463.1990.tb05033.x
Abstract
Arginine catabolism via the arginine deiminase pathways was found in Streptococcus sanguis 903. Citrulline and ornithine were released from resting cells incubated with arginine, arginine-containing peptides, or saliva. Maximum arginine catabolism by resting cells of S. sanguis 903 was found in the pH range 7-8 and at 45-48.degree.C. Arginine deiminase activity was foiund in the cytoplasm and in the cell-wall extract of this strain, while ornithine carbamoyltransferase activity was found in the cytoplasm and in extracts of cell walls and cytoplasmic membranes. Streptococcus mutans GS-5 and Streptococcus sobrinus strains OMZ 176 and 6715 could release arginine from salivary peptides but were incapable of significant arginine catabolism.Keywords
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