title: Arginine catabolism by strains of oral streptococci.
abstract: Arginine catabolism via the arginine deiminase pathway 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 degrees C. Arginine deiminase activity was found 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.
authors: Department of Oral Microbiology, Karolinska Institute, Huddinge University Hospital, Sweden.
authors: E
authors: E
authors: Floderus
authors: L E
authors: LE
authors: Linder
authors: M L
authors: ML
authors: Sund
mesh_terms: D001120:Arginine / Q000378:metabolism*; D002473:Cell Wall / Q000201:enzymology; D002956:Citrulline / Q000378:metabolism; D003593:Cytoplasm / Q000201:enzymology; D006801:Humans; D006867:Hydrolases / Q000378:metabolism*; D009952:Ornithine / Q000378:metabolism; D009954:Ornithine Carbamoyltransferase / Q000378:metabolism; D012463:Saliva / Q000382:microbiology; D013291:Streptococcus / Q000201:enzymology / Q000378:metabolism*; D013298:Streptococcus sanguis / Q000201:enzymology; D013696:Temperature
chemical_list: D002956:Citrulline; D001120:Arginine; D009952:Ornithine; D009954:Ornithine Carbamoyltransferase; D006867:Hydrolases; C019723:arginine deiminase